SF: Move MessageQueue to Scheduler

...as a first step in removing the ISchedulerCallback::scheduleComposite
roundtrip, and extracting scheduling logic from SF::{commit,composite}.

Bug: 185535769
Test: libsurfaceflinger_unittest
Change-Id: I7fb38a1dd7b917e5639b9d58a0d44b32983b689e
diff --git a/services/surfaceflinger/tests/unittests/CompositionTest.cpp b/services/surfaceflinger/tests/unittests/CompositionTest.cpp
index dffc6c6..0c9e6e1 100644
--- a/services/surfaceflinger/tests/unittests/CompositionTest.cpp
+++ b/services/surfaceflinger/tests/unittests/CompositionTest.cpp
@@ -45,7 +45,6 @@
 #include "mock/DisplayHardware/MockComposer.h"
 #include "mock/DisplayHardware/MockPowerAdvisor.h"
 #include "mock/MockEventThread.h"
-#include "mock/MockMessageQueue.h"
 #include "mock/MockTimeStats.h"
 #include "mock/MockVsyncController.h"
 #include "mock/system/window/MockNativeWindow.h"
@@ -95,7 +94,6 @@
                 ::testing::UnitTest::GetInstance()->current_test_info();
         ALOGD("**** Setting up for %s.%s\n", test_info->test_case_name(), test_info->name());
 
-        mFlinger.mutableEventQueue().reset(mMessageQueue);
         setupScheduler();
 
         EXPECT_CALL(*mNativeWindow, query(NATIVE_WINDOW_WIDTH, _))
@@ -183,7 +181,6 @@
     Hwc2::mock::Composer* mComposer = nullptr;
     renderengine::mock::RenderEngine* mRenderEngine = new renderengine::mock::RenderEngine();
     mock::TimeStats* mTimeStats = new mock::TimeStats();
-    mock::MessageQueue* mMessageQueue = new mock::MessageQueue();
     Hwc2::mock::PowerAdvisor mPowerAdvisor;
 
     sp<Fence> mClientTargetAcquireFence = Fence::NO_FENCE;
@@ -539,9 +536,9 @@
         ASSERT_EQ(NO_ERROR, err);
         Mock::VerifyAndClear(test->mRenderEngine);
 
-        EXPECT_CALL(*test->mMessageQueue, scheduleCommit()).Times(1);
+        EXPECT_CALL(*test->mFlinger.scheduler(), scheduleCommit()).Times(1);
         enqueueBuffer(test, layer);
-        Mock::VerifyAndClearExpectations(test->mMessageQueue);
+        Mock::VerifyAndClearExpectations(test->mFlinger.scheduler());
 
         bool ignoredRecomputeVisibleRegions;
         layer->latchBuffer(ignoredRecomputeVisibleRegions, 0, 0);
@@ -836,7 +833,7 @@
 struct BaseLayerVariant {
     template <typename L, typename F>
     static sp<L> createLayerWithFactory(CompositionTest* test, F factory) {
-        EXPECT_CALL(*test->mMessageQueue, postMessage(_)).Times(0);
+        EXPECT_CALL(*test->mFlinger.scheduler(), postMessage(_)).Times(0);
 
         sp<L> layer = factory();
 
@@ -845,7 +842,7 @@
 
         Mock::VerifyAndClear(test->mComposer);
         Mock::VerifyAndClear(test->mRenderEngine);
-        Mock::VerifyAndClearExpectations(test->mMessageQueue);
+        Mock::VerifyAndClearExpectations(test->mFlinger.scheduler());
 
         initLayerDrawingStateAndComputeBounds(test, layer);