diff --git a/libs/gui/BufferHubProducer.cpp b/libs/gui/BufferHubProducer.cpp
index 489f3c3..1f71e23 100644
--- a/libs/gui/BufferHubProducer.cpp
+++ b/libs/gui/BufferHubProducer.cpp
@@ -696,7 +696,7 @@
     // relationship, thus |getConsumerName| from the producer side does not
     // make any sense.
     ALOGE("BufferHubProducer::getConsumerName not supported.");
-    return String8("BufferHubQueue::DummyConsumer");
+    return String8("BufferHubQueue::StubConsumer");
 }
 
 status_t BufferHubProducer::setSharedBufferMode(bool shared_buffer_mode) {
diff --git a/libs/gui/GLConsumer.cpp b/libs/gui/GLConsumer.cpp
index 59f1bcd..30d19e3 100644
--- a/libs/gui/GLConsumer.cpp
+++ b/libs/gui/GLConsumer.cpp
@@ -280,7 +280,7 @@
         mCurrentFenceTime = FenceTime::NO_FENCE;
 
         if (mAttached) {
-            // This binds a dummy buffer (mReleasedTexImage).
+            // This binds a buffer placeholder (mReleasedTexImage).
             status_t result = bindTextureImageLocked();
             if (result != NO_ERROR) {
                 return result;
diff --git a/libs/gui/IProducerListener.cpp b/libs/gui/IProducerListener.cpp
index 5c81b9d..0683087 100644
--- a/libs/gui/IProducerListener.cpp
+++ b/libs/gui/IProducerListener.cpp
@@ -119,7 +119,7 @@
     return BBinder::onTransact(code, data, reply, flags);
 }
 
-DummyProducerListener::~DummyProducerListener() = default;
+StubProducerListener::~StubProducerListener() = default;
 
 bool BnProducerListener::needsReleaseNotify() {
     return true;
diff --git a/libs/gui/Surface.cpp b/libs/gui/Surface.cpp
index cf269b3..c3323fe 100644
--- a/libs/gui/Surface.cpp
+++ b/libs/gui/Surface.cpp
@@ -1513,7 +1513,7 @@
 }
 
 int Surface::connect(int api) {
-    static sp<IProducerListener> listener = new DummyProducerListener();
+    static sp<IProducerListener> listener = new StubProducerListener();
     return connect(api, listener);
 }
 
diff --git a/libs/gui/include/gui/GLConsumer.h b/libs/gui/include/gui/GLConsumer.h
index ddd868d..2f538ff 100644
--- a/libs/gui/include/gui/GLConsumer.h
+++ b/libs/gui/include/gui/GLConsumer.h
@@ -499,7 +499,7 @@
     // protects static initialization
     static Mutex sStaticInitLock;
 
-    // mReleasedTexImageBuffer is a dummy buffer used when in single buffer
+    // mReleasedTexImageBuffer is a buffer placeholder used when in single buffer
     // mode and releaseTexImage() has been called
     static sp<GraphicBuffer> sReleasedTexImageBuffer;
     sp<EglImage> mReleasedTexImage;
diff --git a/libs/gui/include/gui/IGraphicBufferProducer.h b/libs/gui/include/gui/IGraphicBufferProducer.h
index d7f3492..45e0a13 100644
--- a/libs/gui/include/gui/IGraphicBufferProducer.h
+++ b/libs/gui/include/gui/IGraphicBufferProducer.h
@@ -458,7 +458,7 @@
     // the producer wants to be notified when the consumer releases a buffer
     // back to the BufferQueue. It is also used to detect the death of the
     // producer. If only the latter functionality is desired, there is a
-    // DummyProducerListener class in IProducerListener.h that can be used.
+    // StubProducerListener class in IProducerListener.h that can be used.
     //
     // The api should be one of the NATIVE_WINDOW_API_* values in <window.h>
     //
diff --git a/libs/gui/include/gui/IProducerListener.h b/libs/gui/include/gui/IProducerListener.h
index 0b1f4b5..f7ffbb9 100644
--- a/libs/gui/include/gui/IProducerListener.h
+++ b/libs/gui/include/gui/IProducerListener.h
@@ -80,10 +80,9 @@
 class BnProducerListener : public IProducerListener {
 };
 #endif
-class DummyProducerListener : public BnProducerListener
-{
+class StubProducerListener : public BnProducerListener {
 public:
-    virtual ~DummyProducerListener();
+    virtual ~StubProducerListener();
     virtual void onBufferReleased() {}
     virtual bool needsReleaseNotify() { return false; }
 };
diff --git a/libs/gui/include/gui/bufferqueue/1.0/WGraphicBufferProducer.h b/libs/gui/include/gui/bufferqueue/1.0/WGraphicBufferProducer.h
index 99ab085..004d875 100644
--- a/libs/gui/include/gui/bufferqueue/1.0/WGraphicBufferProducer.h
+++ b/libs/gui/include/gui/bufferqueue/1.0/WGraphicBufferProducer.h
@@ -51,12 +51,14 @@
 typedef ::android::IProducerListener BProducerListener;
 
 #ifndef LOG
-struct LOG_dummy {
+struct LOG_stub {
     template <typename T>
-    LOG_dummy& operator<< (const T&) { return *this; }
+    LOG_stub& operator<<(const T&) {
+        return *this;
+    }
 };
 
-#define LOG(x)  LOG_dummy()
+#define LOG(x) LOG_stub()
 #endif
 
 // Instantiate only if HGraphicBufferProducer is base of BASE.
diff --git a/libs/gui/tests/BLASTBufferQueue_test.cpp b/libs/gui/tests/BLASTBufferQueue_test.cpp
index d929a59..da5bbdd 100644
--- a/libs/gui/tests/BLASTBufferQueue_test.cpp
+++ b/libs/gui/tests/BLASTBufferQueue_test.cpp
@@ -128,7 +128,7 @@
         ASSERT_EQ(NO_ERROR, igbProducer->setMaxDequeuedBufferCount(2));
         IGraphicBufferProducer::QueueBufferOutput qbOutput;
         ASSERT_EQ(NO_ERROR,
-                  igbProducer->connect(new DummyProducerListener, NATIVE_WINDOW_API_CPU, false,
+                  igbProducer->connect(new StubProducerListener, NATIVE_WINDOW_API_CPU, false,
                                        &qbOutput));
         ASSERT_NE(ui::Transform::ROT_INVALID, qbOutput.transformHint);
         producer = igbProducer;
diff --git a/libs/gui/tests/BufferItemConsumer_test.cpp b/libs/gui/tests/BufferItemConsumer_test.cpp
index b87cbbd..fc6551c 100644
--- a/libs/gui/tests/BufferItemConsumer_test.cpp
+++ b/libs/gui/tests/BufferItemConsumer_test.cpp
@@ -51,7 +51,7 @@
         mBFL = new BufferFreedListener(this);
         mBIC->setBufferFreedListener(mBFL);
 
-        sp<IProducerListener> producerListener = new DummyProducerListener();
+        sp<IProducerListener> producerListener = new StubProducerListener();
         IGraphicBufferProducer::QueueBufferOutput bufferOutput;
         ASSERT_EQ(NO_ERROR,
                   mProducer->connect(producerListener, NATIVE_WINDOW_API_CPU,
@@ -131,7 +131,7 @@
 // Test that detaching buffer from consumer side triggers onBufferFreed.
 TEST_F(BufferItemConsumerTest, TriggerBufferFreed_DetachBufferFromConsumer) {
     int slot;
-    // Producer: generate a dummy buffer.
+    // Producer: generate a placeholder buffer.
     DequeueBuffer(&slot);
     QueueBuffer(slot);
 
diff --git a/libs/gui/tests/BufferQueue_test.cpp b/libs/gui/tests/BufferQueue_test.cpp
index 6d7b6bb..d1208ee 100644
--- a/libs/gui/tests/BufferQueue_test.cpp
+++ b/libs/gui/tests/BufferQueue_test.cpp
@@ -17,7 +17,7 @@
 #define LOG_TAG "BufferQueue_test"
 //#define LOG_NDEBUG 0
 
-#include "DummyConsumer.h"
+#include "MockConsumer.h"
 
 #include <gui/BufferItem.h>
 #include <gui/BufferQueue.h>
@@ -134,8 +134,8 @@
     mConsumer = interface_cast<IGraphicBufferConsumer>(binderConsumer);
     EXPECT_TRUE(mConsumer != nullptr);
 
-    sp<DummyConsumer> dc(new DummyConsumer);
-    ASSERT_EQ(OK, mConsumer->consumerConnect(dc, false));
+    sp<MockConsumer> mc(new MockConsumer);
+    ASSERT_EQ(OK, mConsumer->consumerConnect(mc, false));
     IGraphicBufferProducer::QueueBufferOutput output;
     ASSERT_EQ(OK,
             mProducer->connect(nullptr, NATIVE_WINDOW_API_CPU, false, &output));
@@ -171,23 +171,22 @@
 
 TEST_F(BufferQueueTest, GetMaxBufferCountInQueueBufferOutput_Succeeds) {
     createBufferQueue();
-    sp<DummyConsumer> dc(new DummyConsumer);
-    mConsumer->consumerConnect(dc, false);
+    sp<MockConsumer> mc(new MockConsumer);
+    mConsumer->consumerConnect(mc, false);
     int bufferCount = 50;
     mConsumer->setMaxBufferCount(bufferCount);
 
     IGraphicBufferProducer::QueueBufferOutput output;
-    mProducer->connect(new DummyProducerListener, NATIVE_WINDOW_API_CPU, false, &output);
+    mProducer->connect(new StubProducerListener, NATIVE_WINDOW_API_CPU, false, &output);
     ASSERT_EQ(output.maxBufferCount, bufferCount);
 }
 
 TEST_F(BufferQueueTest, AcquireBuffer_ExceedsMaxAcquireCount_Fails) {
     createBufferQueue();
-    sp<DummyConsumer> dc(new DummyConsumer);
-    mConsumer->consumerConnect(dc, false);
+    sp<MockConsumer> mc(new MockConsumer);
+    mConsumer->consumerConnect(mc, false);
     IGraphicBufferProducer::QueueBufferOutput qbo;
-    mProducer->connect(new DummyProducerListener, NATIVE_WINDOW_API_CPU, false,
-            &qbo);
+    mProducer->connect(new StubProducerListener, NATIVE_WINDOW_API_CPU, false, &qbo);
     mProducer->setMaxDequeuedBufferCount(3);
 
     int slot;
@@ -219,15 +218,14 @@
 
 TEST_F(BufferQueueTest, SetMaxAcquiredBufferCountWithIllegalValues_ReturnsError) {
     createBufferQueue();
-    sp<DummyConsumer> dc(new DummyConsumer);
-    mConsumer->consumerConnect(dc, false);
+    sp<MockConsumer> mc(new MockConsumer);
+    mConsumer->consumerConnect(mc, false);
 
     EXPECT_EQ(OK, mConsumer->setMaxBufferCount(10));
     EXPECT_EQ(BAD_VALUE, mConsumer->setMaxAcquiredBufferCount(10));
 
     IGraphicBufferProducer::QueueBufferOutput qbo;
-    mProducer->connect(new DummyProducerListener, NATIVE_WINDOW_API_CPU, false,
-            &qbo);
+    mProducer->connect(new StubProducerListener, NATIVE_WINDOW_API_CPU, false, &qbo);
     mProducer->setMaxDequeuedBufferCount(3);
 
     int minBufferCount;
@@ -263,12 +261,11 @@
 
 TEST_F(BufferQueueTest, SetMaxAcquiredBufferCountWithLegalValues_Succeeds) {
     createBufferQueue();
-    sp<DummyConsumer> dc(new DummyConsumer);
-    mConsumer->consumerConnect(dc, false);
+    sp<MockConsumer> mc(new MockConsumer);
+    mConsumer->consumerConnect(mc, false);
 
     IGraphicBufferProducer::QueueBufferOutput qbo;
-    mProducer->connect(new DummyProducerListener, NATIVE_WINDOW_API_CPU, false,
-            &qbo);
+    mProducer->connect(new StubProducerListener, NATIVE_WINDOW_API_CPU, false, &qbo);
     mProducer->setMaxDequeuedBufferCount(2);
 
     int minBufferCount;
@@ -310,8 +307,8 @@
 
 TEST_F(BufferQueueTest, SetMaxBufferCountWithLegalValues_Succeeds) {
     createBufferQueue();
-    sp<DummyConsumer> dc(new DummyConsumer);
-    mConsumer->consumerConnect(dc, false);
+    sp<MockConsumer> mc(new MockConsumer);
+    mConsumer->consumerConnect(mc, false);
 
     // Test shared buffer mode
     EXPECT_EQ(OK, mConsumer->setMaxAcquiredBufferCount(1));
@@ -319,8 +316,8 @@
 
 TEST_F(BufferQueueTest, SetMaxBufferCountWithIllegalValues_ReturnsError) {
     createBufferQueue();
-    sp<DummyConsumer> dc(new DummyConsumer);
-    mConsumer->consumerConnect(dc, false);
+    sp<MockConsumer> mc(new MockConsumer);
+    mConsumer->consumerConnect(mc, false);
 
     EXPECT_EQ(BAD_VALUE, mConsumer->setMaxBufferCount(0));
     EXPECT_EQ(BAD_VALUE, mConsumer->setMaxBufferCount(
@@ -332,11 +329,11 @@
 
 TEST_F(BufferQueueTest, DetachAndReattachOnProducerSide) {
     createBufferQueue();
-    sp<DummyConsumer> dc(new DummyConsumer);
-    ASSERT_EQ(OK, mConsumer->consumerConnect(dc, false));
+    sp<MockConsumer> mc(new MockConsumer);
+    ASSERT_EQ(OK, mConsumer->consumerConnect(mc, false));
     IGraphicBufferProducer::QueueBufferOutput output;
-    ASSERT_EQ(OK, mProducer->connect(new DummyProducerListener,
-            NATIVE_WINDOW_API_CPU, false, &output));
+    ASSERT_EQ(OK,
+              mProducer->connect(new StubProducerListener, NATIVE_WINDOW_API_CPU, false, &output));
 
     ASSERT_EQ(BAD_VALUE, mProducer->detachBuffer(-1)); // Index too low
     ASSERT_EQ(BAD_VALUE, mProducer->detachBuffer(
@@ -386,11 +383,11 @@
 
 TEST_F(BufferQueueTest, DetachAndReattachOnConsumerSide) {
     createBufferQueue();
-    sp<DummyConsumer> dc(new DummyConsumer);
-    ASSERT_EQ(OK, mConsumer->consumerConnect(dc, false));
+    sp<MockConsumer> mc(new MockConsumer);
+    ASSERT_EQ(OK, mConsumer->consumerConnect(mc, false));
     IGraphicBufferProducer::QueueBufferOutput output;
-    ASSERT_EQ(OK, mProducer->connect(new DummyProducerListener,
-            NATIVE_WINDOW_API_CPU, false, &output));
+    ASSERT_EQ(OK,
+              mProducer->connect(new StubProducerListener, NATIVE_WINDOW_API_CPU, false, &output));
 
     int slot;
     sp<Fence> fence;
@@ -445,11 +442,11 @@
 
 TEST_F(BufferQueueTest, MoveFromConsumerToProducer) {
     createBufferQueue();
-    sp<DummyConsumer> dc(new DummyConsumer);
-    ASSERT_EQ(OK, mConsumer->consumerConnect(dc, false));
+    sp<MockConsumer> mc(new MockConsumer);
+    ASSERT_EQ(OK, mConsumer->consumerConnect(mc, false));
     IGraphicBufferProducer::QueueBufferOutput output;
-    ASSERT_EQ(OK, mProducer->connect(new DummyProducerListener,
-            NATIVE_WINDOW_API_CPU, false, &output));
+    ASSERT_EQ(OK,
+              mProducer->connect(new StubProducerListener, NATIVE_WINDOW_API_CPU, false, &output));
 
     int slot;
     sp<Fence> fence;
@@ -488,11 +485,11 @@
 
 TEST_F(BufferQueueTest, TestDisallowingAllocation) {
     createBufferQueue();
-    sp<DummyConsumer> dc(new DummyConsumer);
-    ASSERT_EQ(OK, mConsumer->consumerConnect(dc, true));
+    sp<MockConsumer> mc(new MockConsumer);
+    ASSERT_EQ(OK, mConsumer->consumerConnect(mc, true));
     IGraphicBufferProducer::QueueBufferOutput output;
-    ASSERT_EQ(OK, mProducer->connect(new DummyProducerListener,
-            NATIVE_WINDOW_API_CPU, true, &output));
+    ASSERT_EQ(OK,
+              mProducer->connect(new StubProducerListener, NATIVE_WINDOW_API_CPU, true, &output));
 
     static const uint32_t WIDTH = 320;
     static const uint32_t HEIGHT = 240;
@@ -526,11 +523,11 @@
 
 TEST_F(BufferQueueTest, TestGenerationNumbers) {
     createBufferQueue();
-    sp<DummyConsumer> dc(new DummyConsumer);
-    ASSERT_EQ(OK, mConsumer->consumerConnect(dc, true));
+    sp<MockConsumer> mc(new MockConsumer);
+    ASSERT_EQ(OK, mConsumer->consumerConnect(mc, true));
     IGraphicBufferProducer::QueueBufferOutput output;
-    ASSERT_EQ(OK, mProducer->connect(new DummyProducerListener,
-            NATIVE_WINDOW_API_CPU, true, &output));
+    ASSERT_EQ(OK,
+              mProducer->connect(new StubProducerListener, NATIVE_WINDOW_API_CPU, true, &output));
 
     ASSERT_EQ(OK, mProducer->setGenerationNumber(1));
 
@@ -568,11 +565,11 @@
 
 TEST_F(BufferQueueTest, TestSharedBufferModeWithoutAutoRefresh) {
     createBufferQueue();
-    sp<DummyConsumer> dc(new DummyConsumer);
-    ASSERT_EQ(OK, mConsumer->consumerConnect(dc, true));
+    sp<MockConsumer> mc(new MockConsumer);
+    ASSERT_EQ(OK, mConsumer->consumerConnect(mc, true));
     IGraphicBufferProducer::QueueBufferOutput output;
-    ASSERT_EQ(OK, mProducer->connect(new DummyProducerListener,
-            NATIVE_WINDOW_API_CPU, true, &output));
+    ASSERT_EQ(OK,
+              mProducer->connect(new StubProducerListener, NATIVE_WINDOW_API_CPU, true, &output));
 
     ASSERT_EQ(OK, mProducer->setSharedBufferMode(true));
 
@@ -618,11 +615,11 @@
 
 TEST_F(BufferQueueTest, TestSharedBufferModeWithAutoRefresh) {
     createBufferQueue();
-    sp<DummyConsumer> dc(new DummyConsumer);
-    ASSERT_EQ(OK, mConsumer->consumerConnect(dc, true));
+    sp<MockConsumer> mc(new MockConsumer);
+    ASSERT_EQ(OK, mConsumer->consumerConnect(mc, true));
     IGraphicBufferProducer::QueueBufferOutput output;
-    ASSERT_EQ(OK, mProducer->connect(new DummyProducerListener,
-            NATIVE_WINDOW_API_CPU, true, &output));
+    ASSERT_EQ(OK,
+              mProducer->connect(new StubProducerListener, NATIVE_WINDOW_API_CPU, true, &output));
 
     ASSERT_EQ(OK, mProducer->setSharedBufferMode(true));
     ASSERT_EQ(OK, mProducer->setAutoRefresh(true));
@@ -687,11 +684,11 @@
 
 TEST_F(BufferQueueTest, TestSharedBufferModeUsingAlreadyDequeuedBuffer) {
     createBufferQueue();
-    sp<DummyConsumer> dc(new DummyConsumer);
-    ASSERT_EQ(OK, mConsumer->consumerConnect(dc, true));
+    sp<MockConsumer> mc(new MockConsumer);
+    ASSERT_EQ(OK, mConsumer->consumerConnect(mc, true));
     IGraphicBufferProducer::QueueBufferOutput output;
-    ASSERT_EQ(OK, mProducer->connect(new DummyProducerListener,
-            NATIVE_WINDOW_API_CPU, true, &output));
+    ASSERT_EQ(OK,
+              mProducer->connect(new StubProducerListener, NATIVE_WINDOW_API_CPU, true, &output));
 
     // Dequeue a buffer
     int sharedSlot;
@@ -738,11 +735,11 @@
 
 TEST_F(BufferQueueTest, TestTimeouts) {
     createBufferQueue();
-    sp<DummyConsumer> dc(new DummyConsumer);
-    ASSERT_EQ(OK, mConsumer->consumerConnect(dc, true));
+    sp<MockConsumer> mc(new MockConsumer);
+    ASSERT_EQ(OK, mConsumer->consumerConnect(mc, true));
     IGraphicBufferProducer::QueueBufferOutput output;
-    ASSERT_EQ(OK, mProducer->connect(new DummyProducerListener,
-            NATIVE_WINDOW_API_CPU, true, &output));
+    ASSERT_EQ(OK,
+              mProducer->connect(new StubProducerListener, NATIVE_WINDOW_API_CPU, true, &output));
 
     // Fill up the queue. Since the controlledByApp flags are set to true, this
     // queue should be in non-blocking mode, and we should be recycling the same
@@ -800,11 +797,11 @@
 
 TEST_F(BufferQueueTest, CanAttachWhileDisallowingAllocation) {
     createBufferQueue();
-    sp<DummyConsumer> dc(new DummyConsumer);
-    ASSERT_EQ(OK, mConsumer->consumerConnect(dc, true));
+    sp<MockConsumer> mc(new MockConsumer);
+    ASSERT_EQ(OK, mConsumer->consumerConnect(mc, true));
     IGraphicBufferProducer::QueueBufferOutput output;
-    ASSERT_EQ(OK, mProducer->connect(new DummyProducerListener,
-            NATIVE_WINDOW_API_CPU, true, &output));
+    ASSERT_EQ(OK,
+              mProducer->connect(new StubProducerListener, NATIVE_WINDOW_API_CPU, true, &output));
 
     int slot = BufferQueue::INVALID_BUFFER_SLOT;
     sp<Fence> sourceFence;
@@ -822,11 +819,11 @@
 
 TEST_F(BufferQueueTest, CanRetrieveLastQueuedBuffer) {
     createBufferQueue();
-    sp<DummyConsumer> dc(new DummyConsumer);
-    ASSERT_EQ(OK, mConsumer->consumerConnect(dc, false));
+    sp<MockConsumer> mc(new MockConsumer);
+    ASSERT_EQ(OK, mConsumer->consumerConnect(mc, false));
     IGraphicBufferProducer::QueueBufferOutput output;
-    ASSERT_EQ(OK, mProducer->connect(new DummyProducerListener,
-            NATIVE_WINDOW_API_CPU, false, &output));
+    ASSERT_EQ(OK,
+              mProducer->connect(new StubProducerListener, NATIVE_WINDOW_API_CPU, false, &output));
 
     // Dequeue and queue the first buffer, storing the handle
     int slot = BufferQueue::INVALID_BUFFER_SLOT;
@@ -876,11 +873,11 @@
 
 TEST_F(BufferQueueTest, TestOccupancyHistory) {
     createBufferQueue();
-    sp<DummyConsumer> dc(new DummyConsumer);
-    ASSERT_EQ(OK, mConsumer->consumerConnect(dc, false));
+    sp<MockConsumer> mc(new MockConsumer);
+    ASSERT_EQ(OK, mConsumer->consumerConnect(mc, false));
     IGraphicBufferProducer::QueueBufferOutput output;
-    ASSERT_EQ(OK, mProducer->connect(new DummyProducerListener,
-            NATIVE_WINDOW_API_CPU, false, &output));
+    ASSERT_EQ(OK,
+              mProducer->connect(new StubProducerListener, NATIVE_WINDOW_API_CPU, false, &output));
 
     int slot = BufferQueue::INVALID_BUFFER_SLOT;
     sp<Fence> fence = Fence::NO_FENCE;
@@ -1030,8 +1027,8 @@
 
 TEST_F(BufferQueueTest, TestDiscardFreeBuffers) {
     createBufferQueue();
-    sp<DummyConsumer> dc(new DummyConsumer);
-    ASSERT_EQ(OK, mConsumer->consumerConnect(dc, false));
+    sp<MockConsumer> mc(new MockConsumer);
+    ASSERT_EQ(OK, mConsumer->consumerConnect(mc, false));
     IGraphicBufferProducer::QueueBufferOutput output;
     sp<BufferDiscardedListener> pl(new BufferDiscardedListener);
     ASSERT_EQ(OK, mProducer->connect(pl,
@@ -1115,11 +1112,11 @@
 
 TEST_F(BufferQueueTest, TestBufferReplacedInQueueBuffer) {
     createBufferQueue();
-    sp<DummyConsumer> dc(new DummyConsumer);
-    ASSERT_EQ(OK, mConsumer->consumerConnect(dc, true));
+    sp<MockConsumer> mc(new MockConsumer);
+    ASSERT_EQ(OK, mConsumer->consumerConnect(mc, true));
     IGraphicBufferProducer::QueueBufferOutput output;
-    ASSERT_EQ(OK, mProducer->connect(new DummyProducerListener,
-            NATIVE_WINDOW_API_CPU, true, &output));
+    ASSERT_EQ(OK,
+              mProducer->connect(new StubProducerListener, NATIVE_WINDOW_API_CPU, true, &output));
     ASSERT_EQ(OK, mConsumer->setMaxAcquiredBufferCount(1));
 
     int slot = BufferQueue::INVALID_BUFFER_SLOT;
@@ -1156,12 +1153,11 @@
 
 TEST_F(BufferQueueTest, TestStaleBufferHandleSentAfterDisconnect) {
     createBufferQueue();
-    sp<DummyConsumer> dc(new DummyConsumer);
-    ASSERT_EQ(OK, mConsumer->consumerConnect(dc, true));
+    sp<MockConsumer> mc(new MockConsumer);
+    ASSERT_EQ(OK, mConsumer->consumerConnect(mc, true));
     IGraphicBufferProducer::QueueBufferOutput output;
-    sp<IProducerListener> dummyListener(new DummyProducerListener);
-    ASSERT_EQ(OK, mProducer->connect(dummyListener, NATIVE_WINDOW_API_CPU,
-            true, &output));
+    sp<IProducerListener> fakeListener(new StubProducerListener);
+    ASSERT_EQ(OK, mProducer->connect(fakeListener, NATIVE_WINDOW_API_CPU, true, &output));
 
     int slot = BufferQueue::INVALID_BUFFER_SLOT;
     sp<Fence> fence = Fence::NO_FENCE;
@@ -1215,15 +1211,13 @@
 
 TEST_F(BufferQueueTest, TestProducerConnectDisconnect) {
     createBufferQueue();
-    sp<DummyConsumer> dc(new DummyConsumer);
-    ASSERT_EQ(OK, mConsumer->consumerConnect(dc, true));
+    sp<MockConsumer> mc(new MockConsumer);
+    ASSERT_EQ(OK, mConsumer->consumerConnect(mc, true));
     IGraphicBufferProducer::QueueBufferOutput output;
-    sp<IProducerListener> dummyListener(new DummyProducerListener);
+    sp<IProducerListener> fakeListener(new StubProducerListener);
     ASSERT_EQ(NO_INIT, mProducer->disconnect(NATIVE_WINDOW_API_CPU));
-    ASSERT_EQ(OK, mProducer->connect(
-            dummyListener, NATIVE_WINDOW_API_CPU, true, &output));
-    ASSERT_EQ(BAD_VALUE, mProducer->connect(
-            dummyListener, NATIVE_WINDOW_API_MEDIA, true, &output));
+    ASSERT_EQ(OK, mProducer->connect(fakeListener, NATIVE_WINDOW_API_CPU, true, &output));
+    ASSERT_EQ(BAD_VALUE, mProducer->connect(fakeListener, NATIVE_WINDOW_API_MEDIA, true, &output));
 
     ASSERT_EQ(BAD_VALUE, mProducer->disconnect(NATIVE_WINDOW_API_MEDIA));
     ASSERT_EQ(OK, mProducer->disconnect(NATIVE_WINDOW_API_CPU));
diff --git a/libs/gui/tests/IGraphicBufferProducer_test.cpp b/libs/gui/tests/IGraphicBufferProducer_test.cpp
index 103f775..15bd32d 100644
--- a/libs/gui/tests/IGraphicBufferProducer_test.cpp
+++ b/libs/gui/tests/IGraphicBufferProducer_test.cpp
@@ -17,7 +17,7 @@
 #define LOG_TAG "IGraphicBufferProducer_test"
 //#define LOG_NDEBUG 0
 
-#include "DummyConsumer.h"
+#include "MockConsumer.h"
 
 #include <gtest/gtest.h>
 
@@ -89,7 +89,7 @@
         ALOGV("Begin test: %s.%s", testInfo->test_case_name(),
                 testInfo->name());
 
-        mDC = new DummyConsumer;
+        mMC = new MockConsumer;
 
         switch (GetParam()) {
             case USE_BUFFER_QUEUE_PRODUCER: {
@@ -114,7 +114,7 @@
         }
 
         // Must connect consumer before producer connects will succeed.
-        ASSERT_OK(mConsumer->consumerConnect(mDC, /*controlledByApp*/false));
+        ASSERT_OK(mConsumer->consumerConnect(mMC, /*controlledByApp*/ false));
     }
 
     virtual void TearDown() {
@@ -249,7 +249,7 @@
     }
 
 private: // hide from test body
-    sp<DummyConsumer> mDC;
+    sp<MockConsumer> mMC;
 
 protected: // accessible from test body
     sp<IGraphicBufferProducer> mProducer;
diff --git a/libs/gui/tests/Malicious.cpp b/libs/gui/tests/Malicious.cpp
index acd4297..58d7cc6 100644
--- a/libs/gui/tests/Malicious.cpp
+++ b/libs/gui/tests/Malicious.cpp
@@ -129,7 +129,7 @@
     int32_t mExpectedSlot = 0;
 };
 
-class DummyListener : public BnConsumerListener {
+class FakeListener : public BnConsumerListener {
 public:
     void onFrameAvailable(const BufferItem&) override {}
     void onBuffersReleased() override {}
@@ -140,7 +140,7 @@
     sp<IGraphicBufferProducer> producer;
     sp<IGraphicBufferConsumer> consumer;
     BufferQueue::createBufferQueue(&producer, &consumer);
-    sp<IConsumerListener> listener = new DummyListener;
+    sp<IConsumerListener> listener = new FakeListener;
     consumer->consumerConnect(listener, false);
 
     sp<MaliciousBQP> malicious = new MaliciousBQP(producer);
diff --git a/libs/gui/tests/DummyConsumer.h b/libs/gui/tests/MockConsumer.h
similarity index 94%
rename from libs/gui/tests/DummyConsumer.h
rename to libs/gui/tests/MockConsumer.h
index 502bdf9..4a6c51c 100644
--- a/libs/gui/tests/DummyConsumer.h
+++ b/libs/gui/tests/MockConsumer.h
@@ -18,7 +18,7 @@
 
 namespace android {
 
-struct DummyConsumer : public BnConsumerListener {
+struct MockConsumer : public BnConsumerListener {
     void onFrameAvailable(const BufferItem& /* item */) override {}
     void onBuffersReleased() override {}
     void onSidebandStreamChanged() override {}
diff --git a/libs/gui/tests/StreamSplitter_test.cpp b/libs/gui/tests/StreamSplitter_test.cpp
index ad6e051..b65cdda 100644
--- a/libs/gui/tests/StreamSplitter_test.cpp
+++ b/libs/gui/tests/StreamSplitter_test.cpp
@@ -48,7 +48,7 @@
     }
 };
 
-struct DummyListener : public BnConsumerListener {
+struct FakeListener : public BnConsumerListener {
     virtual void onFrameAvailable(const BufferItem& /* item */) {}
     virtual void onBuffersReleased() {}
     virtual void onSidebandStreamChanged() {}
@@ -64,7 +64,7 @@
     sp<IGraphicBufferProducer> outputProducer;
     sp<IGraphicBufferConsumer> outputConsumer;
     BufferQueue::createBufferQueue(&outputProducer, &outputConsumer);
-    ASSERT_EQ(OK, outputConsumer->consumerConnect(new DummyListener, false));
+    ASSERT_EQ(OK, outputConsumer->consumerConnect(new FakeListener, false));
 
     sp<StreamSplitter> splitter;
     status_t status = StreamSplitter::createSplitter(inputConsumer, &splitter);
@@ -75,8 +75,9 @@
     ASSERT_EQ(OK, outputProducer->allowAllocation(false));
 
     IGraphicBufferProducer::QueueBufferOutput qbOutput;
-    ASSERT_EQ(OK, inputProducer->connect(new DummyProducerListener,
-            NATIVE_WINDOW_API_CPU, false, &qbOutput));
+    ASSERT_EQ(OK,
+              inputProducer->connect(new StubProducerListener, NATIVE_WINDOW_API_CPU, false,
+                                     &qbOutput));
 
     int slot;
     sp<Fence> fence;
@@ -132,8 +133,7 @@
     for (int output = 0; output < NUM_OUTPUTS; ++output) {
         BufferQueue::createBufferQueue(&outputProducers[output],
                 &outputConsumers[output]);
-        ASSERT_EQ(OK, outputConsumers[output]->consumerConnect(
-                    new DummyListener, false));
+        ASSERT_EQ(OK, outputConsumers[output]->consumerConnect(new FakeListener, false));
     }
 
     sp<StreamSplitter> splitter;
@@ -147,8 +147,9 @@
     }
 
     IGraphicBufferProducer::QueueBufferOutput qbOutput;
-    ASSERT_EQ(OK, inputProducer->connect(new DummyProducerListener,
-            NATIVE_WINDOW_API_CPU, false, &qbOutput));
+    ASSERT_EQ(OK,
+              inputProducer->connect(new StubProducerListener, NATIVE_WINDOW_API_CPU, false,
+                                     &qbOutput));
 
     int slot;
     sp<Fence> fence;
@@ -203,7 +204,7 @@
     sp<IGraphicBufferProducer> outputProducer;
     sp<IGraphicBufferConsumer> outputConsumer;
     BufferQueue::createBufferQueue(&outputProducer, &outputConsumer);
-    ASSERT_EQ(OK, outputConsumer->consumerConnect(new DummyListener, false));
+    ASSERT_EQ(OK, outputConsumer->consumerConnect(new FakeListener, false));
 
     sp<StreamSplitter> splitter;
     status_t status = StreamSplitter::createSplitter(inputConsumer, &splitter);
@@ -211,8 +212,9 @@
     ASSERT_EQ(OK, splitter->addOutput(outputProducer));
 
     IGraphicBufferProducer::QueueBufferOutput qbOutput;
-    ASSERT_EQ(OK, inputProducer->connect(new DummyProducerListener,
-            NATIVE_WINDOW_API_CPU, false, &qbOutput));
+    ASSERT_EQ(OK,
+              inputProducer->connect(new StubProducerListener, NATIVE_WINDOW_API_CPU, false,
+                                     &qbOutput));
 
     int slot;
     sp<Fence> fence;
diff --git a/libs/gui/tests/SurfaceTextureClient_test.cpp b/libs/gui/tests/SurfaceTextureClient_test.cpp
index c85e844..c7458a3 100644
--- a/libs/gui/tests/SurfaceTextureClient_test.cpp
+++ b/libs/gui/tests/SurfaceTextureClient_test.cpp
@@ -54,7 +54,7 @@
         mANW = mSTC;
 
         // We need a valid GL context so we can test updateTexImage()
-        // This initializes EGL and create a dummy GL context with a
+        // This initializes EGL and create a GL context placeholder with a
         // pbuffer render target.
         mEglDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY);
         ASSERT_EQ(EGL_SUCCESS, eglGetError());
diff --git a/libs/gui/tests/Surface_test.cpp b/libs/gui/tests/Surface_test.cpp
index 9906166..592913c 100644
--- a/libs/gui/tests/Surface_test.cpp
+++ b/libs/gui/tests/Surface_test.cpp
@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-#include "DummyConsumer.h"
+#include "MockConsumer.h"
 
 #include <gtest/gtest.h>
 
@@ -56,12 +56,11 @@
 
 static constexpr uint64_t NO_FRAME_INDEX = std::numeric_limits<uint64_t>::max();
 
-class DummySurfaceListener : public SurfaceListener {
+class FakeSurfaceListener : public SurfaceListener {
 public:
-    DummySurfaceListener(bool enableReleasedCb = false) :
-            mEnableReleaseCb(enableReleasedCb),
-            mBuffersReleased(0) {}
-    virtual ~DummySurfaceListener() = default;
+    FakeSurfaceListener(bool enableReleasedCb = false)
+          : mEnableReleaseCb(enableReleasedCb), mBuffersReleased(0) {}
+    virtual ~FakeSurfaceListener() = default;
 
     virtual void onBufferReleased() {
         mBuffersReleased++;
@@ -124,15 +123,15 @@
         sp<IGraphicBufferConsumer> consumer;
         BufferQueue::createBufferQueue(&producer, &consumer);
 
-        sp<DummyConsumer> dummyConsumer(new DummyConsumer);
-        consumer->consumerConnect(dummyConsumer, false);
+        sp<MockConsumer> mockConsumer(new MockConsumer);
+        consumer->consumerConnect(mockConsumer, false);
         consumer->setConsumerName(String8("TestConsumer"));
 
         sp<Surface> surface = new Surface(producer);
         sp<ANativeWindow> window(surface);
-        sp<DummySurfaceListener> listener;
+        sp<FakeSurfaceListener> listener;
         if (hasSurfaceListener) {
-            listener = new DummySurfaceListener(enableReleasedCb);
+            listener = new FakeSurfaceListener(enableReleasedCb);
         }
         ASSERT_EQ(OK, surface->connect(
                 NATIVE_WINDOW_API_CPU,
@@ -381,8 +380,8 @@
     sp<IGraphicBufferConsumer> consumer;
     BufferQueue::createBufferQueue(&producer, &consumer);
 
-    sp<DummyConsumer> dummyConsumer(new DummyConsumer);
-    consumer->consumerConnect(dummyConsumer, false);
+    sp<MockConsumer> mockConsumer(new MockConsumer);
+    consumer->consumerConnect(mockConsumer, false);
     consumer->setConsumerName(String8("TestConsumer"));
 
     sp<Surface> surface = new Surface(producer);
@@ -397,8 +396,8 @@
     sp<IGraphicBufferConsumer> consumer;
     BufferQueue::createBufferQueue(&producer, &consumer);
 
-    sp<DummyConsumer> dummyConsumer(new DummyConsumer);
-    consumer->consumerConnect(dummyConsumer, false);
+    sp<MockConsumer> mockConsumer(new MockConsumer);
+    consumer->consumerConnect(mockConsumer, false);
     consumer->setConsumerName(String8("TestConsumer"));
 
     sp<Surface> surface = new Surface(producer);
@@ -428,8 +427,8 @@
     sp<IGraphicBufferConsumer> consumer;
     BufferQueue::createBufferQueue(&producer, &consumer);
 
-    sp<DummyConsumer> dummyConsumer(new DummyConsumer);
-    consumer->consumerConnect(dummyConsumer, false);
+    sp<MockConsumer> mockConsumer(new MockConsumer);
+    consumer->consumerConnect(mockConsumer, false);
     consumer->setConsumerName(String8("TestConsumer"));
 
     sp<Surface> surface = new Surface(producer);
@@ -452,8 +451,8 @@
     sp<IGraphicBufferConsumer> consumer;
     BufferQueue::createBufferQueue(&producer, &consumer);
 
-    sp<DummyConsumer> dummyConsumer(new DummyConsumer);
-    consumer->consumerConnect(dummyConsumer, false);
+    sp<MockConsumer> mockConsumer(new MockConsumer);
+    consumer->consumerConnect(mockConsumer, false);
     consumer->setConsumerName(String8("TestConsumer"));
 
     sp<Surface> surface = new Surface(producer);
@@ -497,8 +496,8 @@
     sp<IGraphicBufferConsumer> consumer;
     BufferQueue::createBufferQueue(&producer, &consumer);
 
-    sp<DummyConsumer> dummyConsumer(new DummyConsumer);
-    consumer->consumerConnect(dummyConsumer, false);
+    sp<MockConsumer> mockConsumer(new MockConsumer);
+    consumer->consumerConnect(mockConsumer, false);
     consumer->setConsumerName(String8("TestConsumer"));
 
     sp<Surface> surface = new Surface(producer);
@@ -523,13 +522,13 @@
     sp<IGraphicBufferConsumer> consumer;
     BufferQueue::createBufferQueue(&producer, &consumer);
 
-    sp<DummyConsumer> dummyConsumer(new DummyConsumer);
-    consumer->consumerConnect(dummyConsumer, false);
+    sp<MockConsumer> mockConsumer(new MockConsumer);
+    consumer->consumerConnect(mockConsumer, false);
     consumer->setConsumerName(String8("TestConsumer"));
 
     sp<Surface> surface = new Surface(producer);
     sp<ANativeWindow> window(surface);
-    sp<DummyProducerListener> listener = new DummyProducerListener();
+    sp<StubProducerListener> listener = new StubProducerListener();
     ASSERT_EQ(OK, surface->connect(
             NATIVE_WINDOW_API_CPU,
             /*listener*/listener,
@@ -1910,8 +1909,8 @@
     sp<IGraphicBufferConsumer> consumer;
     BufferQueue::createBufferQueue(&producer, &consumer);
 
-    sp<DummyConsumer> dummyConsumer(new DummyConsumer);
-    consumer->consumerConnect(dummyConsumer, false);
+    sp<MockConsumer> mockConsumer(new MockConsumer);
+    consumer->consumerConnect(mockConsumer, false);
     consumer->setDefaultBufferSize(10, 10);
 
     sp<Surface> surface = new Surface(producer);
@@ -1980,8 +1979,8 @@
     sp<IGraphicBufferConsumer> consumer;
     BufferQueue::createBufferQueue(&producer, &consumer);
 
-    sp<DummyConsumer> dummyConsumer(new DummyConsumer);
-    consumer->consumerConnect(dummyConsumer, false);
+    sp<MockConsumer> mockConsumer(new MockConsumer);
+    consumer->consumerConnect(mockConsumer, false);
 
     sp<Surface> surface = new Surface(producer);
     sp<ANativeWindow> window(surface);