cc: Handle retroactive BeginFrames in the Scheduler.

cc/trees/layer_tree_host_unittest.cc

 // Copyright 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/trees/layer_tree_host.h"
 
 #include <algorithm>
 
 #include "base/auto_reset.h"
 #include "base/synchronization/lock.h"
@@ skipping 1089 matching lines @@
   virtual void BeginCommitOnThread(LayerTreeHostImpl* impl) OVERRIDE {
     EXPECT_EQ(frame_count_with_pending_tree_, 0);
     impl->BlockNotifyReadyToActivateForTesting(true);
   }
 
   virtual void WillBeginImplFrameOnThread(LayerTreeHostImpl* impl,
                                           const BeginFrameArgs& args) OVERRIDE {
     if (impl->pending_tree())
       frame_count_with_pending_tree_++;
 
-    if (frame_count_with_pending_tree_ == 2)
-      impl->BlockNotifyReadyToActivateForTesting(false);
-  }
-
-  virtual void DidBeginImplFrameOnThread(LayerTreeHostImpl* impl,
-                                         const BeginFrameArgs& args) OVERRIDE {
     if (frame_count_with_pending_tree_ == 1) {
       EXPECT_EQ(first_frame_time_.ToInternalValue(), 0);
       first_frame_time_ = impl->CurrentFrameTimeTicks();
+    } else if (frame_count_with_pending_tree_ == 2) {
+      impl->BlockNotifyReadyToActivateForTesting(false);
     }
   }
 
   virtual void DrawLayersOnThread(LayerTreeHostImpl* impl) OVERRIDE {
     if (frame_count_with_pending_tree_ > 1) {
       EXPECT_NE(first_frame_time_.ToInternalValue(), 0);
       EXPECT_NE(first_frame_time_.ToInternalValue(),
                 impl->CurrentFrameTimeTicks().ToInternalValue());
       EndTest();
       return;
@@ skipping 1528 matching lines @@
         break;
     }
   }
 
  private:
   NotificationClient client_;
 };
 
 SINGLE_THREAD_TEST_F(LayerTreeHostTestLCDNotification);
 
-// Verify that the BeginImplFrame notification is used to initiate rendering.
-class LayerTreeHostTestBeginImplFrameNotification : public LayerTreeHostTest {
+// Verify that the BeginFrame notification is used to initiate rendering.
+class LayerTreeHostTestBeginFrameNotification : public LayerTreeHostTest {
  public:
   virtual void InitializeSettings(LayerTreeSettings* settings) OVERRIDE {
     settings->begin_impl_frame_scheduling_enabled = true;
   }
 
   virtual void BeginTest() OVERRIDE {
-    // This will trigger a SetNeedsBeginImplFrame which will trigger a
-    // BeginImplFrame.
+    // This will trigger a SetNeedsBeginFrame which will trigger a
+    // BeginFrame.
     PostSetNeedsCommitToMainThread();
   }
 
   virtual DrawSwapReadbackResult::DrawResult PrepareToDrawOnThread(
       LayerTreeHostImpl* host_impl,
       LayerTreeHostImpl::FrameData* frame,
       DrawSwapReadbackResult::DrawResult draw_result) OVERRIDE {
     EndTest();
     return DrawSwapReadbackResult::DRAW_SUCCESS;
   }
 
   virtual void AfterTest() OVERRIDE {}
 
  private:
   base::TimeTicks frame_time_;
 };
 
-MULTI_THREAD_TEST_F(LayerTreeHostTestBeginImplFrameNotification);
+MULTI_THREAD_TEST_F(LayerTreeHostTestBeginFrameNotification);
 
-class LayerTreeHostTestBeginImplFrameNotificationShutdownWhileEnabled
+class LayerTreeHostTestBeginFrameNotificationShutdownWhileEnabled
     : public LayerTreeHostTest {
  public:
   virtual void InitializeSettings(LayerTreeSettings* settings) OVERRIDE {
     settings->begin_impl_frame_scheduling_enabled = true;
     settings->using_synchronous_renderer_compositor = true;
   }
 
   virtual void BeginTest() OVERRIDE { PostSetNeedsCommitToMainThread(); }
 
   virtual void CommitCompleteOnThread(LayerTreeHostImpl* host_impl) OVERRIDE {
-    // The BeginImplFrame notification is turned off now but will get enabled
+    // The BeginFrame notification is turned off now but will get enabled
     // once we return. End test while it's enabled.
     ImplThreadTaskRunner()->PostTask(
         FROM_HERE,
-        base::Bind(&LayerTreeHostTestBeginImplFrameNotification::EndTest,
+        base::Bind(&LayerTreeHostTestBeginFrameNotification::EndTest,
                    base::Unretained(this)));
   }
 
   virtual void AfterTest() OVERRIDE {}
 };
 
 MULTI_THREAD_TEST_F(
-    LayerTreeHostTestBeginImplFrameNotificationShutdownWhileEnabled);
+    LayerTreeHostTestBeginFrameNotificationShutdownWhileEnabled);
 
 class LayerTreeHostTestAbortedCommitDoesntStall : public LayerTreeHostTest {
  protected:
   LayerTreeHostTestAbortedCommitDoesntStall()
       : commit_count_(0), commit_abort_count_(0), commit_complete_count_(0) {}
 
   virtual void InitializeSettings(LayerTreeSettings* settings) OVERRIDE {
     settings->begin_impl_frame_scheduling_enabled = true;
   }
 
@@ skipping 2473 matching lines @@
   }
 
   virtual void AfterTest() OVERRIDE {}
 
   FakeContentLayerClient client_;
 };
 
 MULTI_THREAD_TEST_F(LayerTreeHostTestGpuRasterizationSetting);
 
 }  // namespace cc