diff --git a/services/surfaceflinger/tests/unittests/DisplayTransactionTest.cpp b/services/surfaceflinger/tests/unittests/DisplayTransactionTest.cpp
index 1f57b8e..32712c7 100644
--- a/services/surfaceflinger/tests/unittests/DisplayTransactionTest.cpp
+++ b/services/surfaceflinger/tests/unittests/DisplayTransactionTest.cpp
@@ -116,7 +116,7 @@
     // These mocks are created by the test, but are destroyed by SurfaceFlinger
     // by virtue of being stored into a std::unique_ptr. However we still need
     // to keep a reference to them for use in setting up call expectations.
-    RE::mock::RenderEngine* mRenderEngine = new RE::mock::RenderEngine();
+    renderengine::mock::RenderEngine* mRenderEngine = new renderengine::mock::RenderEngine();
     Hwc2::mock::Composer* mComposer = nullptr;
     mock::MessageQueue* mMessageQueue = new mock::MessageQueue();
     mock::SurfaceInterceptor* mSurfaceInterceptor = new mock::SurfaceInterceptor();
@@ -127,7 +127,7 @@
     sp<mock::GraphicBufferProducer> mProducer;
     mock::NativeWindowSurface* mNativeWindowSurface = nullptr;
     sp<mock::NativeWindow> mNativeWindow;
-    RE::mock::Surface* mRenderSurface = nullptr;
+    renderengine::mock::Surface* mRenderSurface = nullptr;
 };
 
 DisplayTransactionTest::DisplayTransactionTest() {
@@ -155,7 +155,7 @@
     mFlinger.mutableEventControlThread().reset(mEventControlThread);
     mFlinger.mutableEventThread().reset(mEventThread);
     mFlinger.mutableEventQueue().reset(mMessageQueue);
-    mFlinger.setupRenderEngine(std::unique_ptr<RE::RenderEngine>(mRenderEngine));
+    mFlinger.setupRenderEngine(std::unique_ptr<renderengine::RenderEngine>(mRenderEngine));
     mFlinger.mutableInterceptor().reset(mSurfaceInterceptor);
     mFlinger.mutablePrimaryDispSync().reset(mPrimaryDispSync);
 
@@ -277,9 +277,10 @@
         // For simplicity, we only expect to create a single render surface for
         // each test.
         ASSERT_TRUE(test->mRenderSurface == nullptr);
-        test->mRenderSurface = new RE::mock::Surface();
+        test->mRenderSurface = new renderengine::mock::Surface();
         EXPECT_CALL(*test->mRenderEngine, createSurface())
-                .WillOnce(Return(ByMove(std::unique_ptr<RE::Surface>(test->mRenderSurface))));
+                .WillOnce(Return(ByMove(
+                        std::unique_ptr<renderengine::Surface>(test->mRenderSurface))));
         EXPECT_CALL(*test->mRenderSurface, setAsync(static_cast<bool>(ASYNC))).Times(1);
         EXPECT_CALL(*test->mRenderSurface, setCritical(static_cast<bool>(CRITICAL))).Times(1);
         EXPECT_CALL(*test->mRenderSurface, setNativeWindow(test->mNativeWindow.get())).Times(1);
@@ -1735,11 +1736,11 @@
     // A display is set up
     auto nativeWindow = new mock::NativeWindow();
     auto displaySurface = new mock::DisplaySurface();
-    auto renderSurface = new RE::mock::Surface();
+    auto renderSurface = new renderengine::mock::Surface();
     auto display = Case::Display::makeFakeExistingDisplayInjector(this);
     display.setNativeWindow(nativeWindow);
     display.setDisplaySurface(displaySurface);
-    display.setRenderSurface(std::unique_ptr<RE::Surface>(renderSurface));
+    display.setRenderSurface(std::unique_ptr<renderengine::Surface>(renderSurface));
     display.inject();
 
     // There is a change to the viewport state
@@ -1776,11 +1777,11 @@
     // A display is set up
     auto nativeWindow = new mock::NativeWindow();
     auto displaySurface = new mock::DisplaySurface();
-    auto renderSurface = new RE::mock::Surface();
+    auto renderSurface = new renderengine::mock::Surface();
     auto display = Case::Display::makeFakeExistingDisplayInjector(this);
     display.setNativeWindow(nativeWindow);
     display.setDisplaySurface(displaySurface);
-    display.setRenderSurface(std::unique_ptr<RE::Surface>(renderSurface));
+    display.setRenderSurface(std::unique_ptr<renderengine::Surface>(renderSurface));
     display.inject();
 
     // There is a change to the viewport state
diff --git a/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h b/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h
index d8e7581..b0103df 100644
--- a/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h
+++ b/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h
@@ -23,7 +23,7 @@
 
 class EventThread;
 
-namespace RE {
+namespace renderengine {
 class RenderEngine;
 }
 
@@ -36,7 +36,7 @@
     // Extend this as needed for accessing SurfaceFlinger private (and public)
     // functions.
 
-    void setupRenderEngine(std::unique_ptr<RE::RenderEngine> renderEngine) {
+    void setupRenderEngine(std::unique_ptr<renderengine::RenderEngine> renderEngine) {
         mFlinger->getBE().mRenderEngine = std::move(renderEngine);
     }
 
@@ -313,7 +313,7 @@
             return *this;
         }
 
-        auto& setRenderSurface(std::unique_ptr<RE::Surface> renderSurface) {
+        auto& setRenderSurface(std::unique_ptr<renderengine::Surface> renderSurface) {
             mRenderSurface = std::move(renderSurface);
             return *this;
         }
@@ -352,7 +352,7 @@
         const int32_t mDisplayId;
         sp<ANativeWindow> mNativeWindow;
         sp<DisplaySurface> mDisplaySurface;
-        std::unique_ptr<RE::Surface> mRenderSurface;
+        std::unique_ptr<renderengine::Surface> mRenderSurface;
         bool mSecure = false;
     };
 
diff --git a/services/surfaceflinger/tests/unittests/mock/RenderEngine/MockRenderEngine.cpp b/services/surfaceflinger/tests/unittests/mock/RenderEngine/MockRenderEngine.cpp
index 200f214..06ef0b2 100644
--- a/services/surfaceflinger/tests/unittests/mock/RenderEngine/MockRenderEngine.cpp
+++ b/services/surfaceflinger/tests/unittests/mock/RenderEngine/MockRenderEngine.cpp
@@ -19,7 +19,7 @@
 #include <ui/Region.h>
 
 namespace android {
-namespace RE {
+namespace renderengine {
 namespace mock {
 
 // Explicit default instantiation is recommended.
@@ -33,5 +33,5 @@
 Image::~Image() = default;
 
 } // namespace mock
-} // namespace RE
+} // namespace renderengine
 } // namespace android
diff --git a/services/surfaceflinger/tests/unittests/mock/RenderEngine/MockRenderEngine.h b/services/surfaceflinger/tests/unittests/mock/RenderEngine/MockRenderEngine.h
index b907c49..bf3c09a 100644
--- a/services/surfaceflinger/tests/unittests/mock/RenderEngine/MockRenderEngine.h
+++ b/services/surfaceflinger/tests/unittests/mock/RenderEngine/MockRenderEngine.h
@@ -25,22 +25,22 @@
 #include <renderengine/Texture.h>
 
 namespace android {
-namespace RE {
+namespace renderengine {
 namespace mock {
 
-class RenderEngine : public RE::RenderEngine {
+class RenderEngine : public renderengine::RenderEngine {
 public:
     RenderEngine();
     ~RenderEngine() override;
 
-    MOCK_METHOD0(createSurface, std::unique_ptr<RE::Surface>());
-    MOCK_METHOD0(createImage, std::unique_ptr<RE::Image>());
+    MOCK_METHOD0(createSurface, std::unique_ptr<renderengine::Surface>());
+    MOCK_METHOD0(createImage, std::unique_ptr<renderengine::Image>());
     MOCK_CONST_METHOD0(primeCache, void());
     MOCK_METHOD1(dump, void(String8&));
     MOCK_CONST_METHOD0(useNativeFenceSync, bool());
     MOCK_CONST_METHOD0(useWaitSync, bool());
     MOCK_CONST_METHOD0(isCurrent, bool());
-    MOCK_METHOD1(setCurrentSurface, bool(const RE::Surface&));
+    MOCK_METHOD1(setCurrentSurface, bool(const renderengine::Surface&));
     MOCK_METHOD0(resetCurrentSurface, void());
     MOCK_METHOD0(flush, base::unique_fd());
     MOCK_METHOD0(finish, bool());
@@ -52,7 +52,7 @@
     MOCK_METHOD0(disableScissor, void());
     MOCK_METHOD2(genTextures, void(size_t, uint32_t*));
     MOCK_METHOD2(deleteTextures, void(size_t, uint32_t const*));
-    MOCK_METHOD2(bindExternalTextureImage, void(uint32_t, const RE::Image&));
+    MOCK_METHOD2(bindExternalTextureImage, void(uint32_t, const renderengine::Image&));
     MOCK_METHOD5(readPixels, void(size_t, size_t, size_t, size_t, uint32_t*));
     MOCK_CONST_METHOD0(checkErrors, void());
     MOCK_METHOD6(setViewportAndProjection,
@@ -70,14 +70,16 @@
     MOCK_METHOD1(setOutputDataSpace, void(ui::Dataspace));
     MOCK_METHOD1(setDisplayMaxLuminance, void(const float));
     MOCK_METHOD2(bindNativeBufferAsFrameBuffer,
-                 void(ANativeWindowBuffer*, RE::BindNativeBufferAsFramebuffer*));
-    MOCK_METHOD1(unbindNativeBufferAsFrameBuffer, void(RE::BindNativeBufferAsFramebuffer*));
+                 void(ANativeWindowBuffer*,
+                      renderengine::BindNativeBufferAsFramebuffer*));
+    MOCK_METHOD1(unbindNativeBufferAsFrameBuffer,
+                 void(renderengine::BindNativeBufferAsFramebuffer*));
     MOCK_METHOD1(drawMesh, void(const Mesh&));
     MOCK_CONST_METHOD0(getMaxTextureSize, size_t());
     MOCK_CONST_METHOD0(getMaxViewportDims, size_t());
 };
 
-class Surface : public RE::Surface {
+class Surface : public renderengine::Surface {
 public:
     Surface();
     ~Surface() override;
@@ -94,7 +96,7 @@
     MOCK_CONST_METHOD0(queryHeight, int32_t());
 };
 
-class Image : public RE::Image {
+class Image : public renderengine::Image {
 public:
     Image();
     ~Image() override;
@@ -104,5 +106,5 @@
 };
 
 } // namespace mock
-} // namespace RE
+} // namespace renderengine
 } // namespace android