[cc] Remove BeginFrameAck from BFS::DidFinishFrame and update tests.

content/browser/renderer_host/render_widget_host_view_aura_unittest.cc

Index: content/browser/renderer_host/render_widget_host_view_aura_unittest.cc
diff --git a/content/browser/renderer_host/render_widget_host_view_aura_unittest.cc b/content/browser/renderer_host/render_widget_host_view_aura_unittest.cc
index 6800c342bfa7cfdc26a132af41f112589f57b771..3bbc617245152047df8e1be9c181df80bf8e1434 100644
--- a/content/browser/renderer_host/render_widget_host_view_aura_unittest.cc
+++ b/content/browser/renderer_host/render_widget_host_view_aura_unittest.cc
@@ -3310,155 +3310,9 @@ class LastObserverTracker : public cc::FakeExternalBeginFrameSource::Client {
 };
 }  // namespace
 
-// Tests that BeginFrameAcks are forwarded correctly from the
-// SwapCompositorFrame and OnDidNotProduceFrame IPCs through DelegatedFrameHost
-// and its CompositorFrameSinkSupport.
-TEST_F(RenderWidgetHostViewAuraTest, ForwardsBeginFrameAcks) {
-  gfx::Rect view_rect(100, 100);
-  gfx::Size frame_size = view_rect.size();
-  cc::LocalSurfaceId local_surface_id = kArbitraryLocalSurfaceId;
-
-  view_->InitAsChild(nullptr);
-  aura::client::ParentWindowWithContext(
-      view_->GetNativeView(), parent_view_->GetNativeView()->GetRootWindow(),
-      gfx::Rect());
-  view_->SetSize(view_rect.size());
-
-  // Replace BeginFrameSource so that we can observe acknowledgments. Since the
-  // DelegatedFrameHost doesn't directly observe our BeginFrameSource,
-  // |observer_tracker| grabs a pointer to the observer (the
-  // DelegatedFrameHost's CompositorFrameSinkSupport).
-  LastObserverTracker observer_tracker;
-  cc::FakeExternalBeginFrameSource source(0.f, false);
-  uint32_t source_id = source.source_id();
-  source.SetClient(&observer_tracker);
-  cc::FrameSinkId frame_sink_id =
-      view_->GetDelegatedFrameHost()->GetFrameSinkId();
-  ImageTransportFactory* factory = ImageTransportFactory::GetInstance();
-  cc::SurfaceManager* surface_manager =
-      factory->GetContextFactoryPrivate()->GetSurfaceManager();
-  surface_manager->RegisterBeginFrameSource(&source, frame_sink_id);
-  view_->SetNeedsBeginFrames(true);
-  EXPECT_TRUE(observer_tracker.last_observer_);
-
-  {
-    cc::BeginFrameArgs args =
-        cc::CreateBeginFrameArgsForTesting(BEGINFRAME_FROM_HERE, source_id, 5u);
-    source.TestOnBeginFrame(args);
-
-    // Ack from CompositorFrame is forwarded.
-    cc::BeginFrameAck ack(source_id, 5, 4, true);
-    cc::CompositorFrame frame = MakeDelegatedFrame(1.f, frame_size, view_rect);
-    frame.metadata.begin_frame_ack = ack;
-    view_->SubmitCompositorFrame(local_surface_id, std::move(frame));
-    view_->RunOnCompositingDidCommit();
-    EXPECT_EQ(ack, source.LastAckForObserver(observer_tracker.last_observer_));
-  }
-
-  {
-    cc::BeginFrameArgs args =
-        cc::CreateBeginFrameArgsForTesting(BEGINFRAME_FROM_HERE, source_id, 6u);
-    source.TestOnBeginFrame(args);
-
-    // Explicit ack through OnDidNotProduceFrame is forwarded.
-    cc::BeginFrameAck ack(source_id, 6, 4, false);
-    view_->OnDidNotProduceFrame(ack);
-    EXPECT_EQ(ack, source.LastAckForObserver(observer_tracker.last_observer_));
-  }
-
-  // Lock the compositor. Now we should drop frames and, thus,
-  // latest_confirmed_sequence_number should not change.
-  view_rect = gfx::Rect(150, 150);
-  view_->SetSize(view_rect.size());
-
-  {
-    cc::BeginFrameArgs args =
-        cc::CreateBeginFrameArgsForTesting(BEGINFRAME_FROM_HERE, source_id, 7u);
-    source.TestOnBeginFrame(args);
-
-    // Ack from CompositorFrame is forwarded with old
-    // latest_confirmed_sequence_number and without damage.
-    cc::BeginFrameAck ack(source_id, 7, 7, true);
-    gfx::Rect dropped_damage_rect(10, 20, 30, 40);
-    cc::CompositorFrame frame =
-        MakeDelegatedFrame(1.f, frame_size, dropped_damage_rect);
-    frame.metadata.begin_frame_ack = ack;
-    view_->SubmitCompositorFrame(local_surface_id, std::move(frame));
-    view_->RunOnCompositingDidCommit();
-    ack.latest_confirmed_sequence_number = 4;
-    ack.has_damage = false;
-    EXPECT_EQ(ack, source.LastAckForObserver(observer_tracker.last_observer_));
-  }
-
-  // Change source_id known to the view. This should reset the
-  // latest_confirmed_sequence_number tracked by the view.
-  source_id = cc::BeginFrameArgs::kManualSourceId;
-
-  {
-    cc::BeginFrameArgs args = cc::CreateBeginFrameArgsForTesting(
-        BEGINFRAME_FROM_HERE, source_id, 10u);
-    source.TestOnBeginFrame(args);
-
-    // Ack from CompositorFrame is forwarded with invalid
-    // latest_confirmed_sequence_number and without damage.
-    cc::BeginFrameAck ack(source_id, 10, 10, true);
-    gfx::Rect dropped_damage_rect(10, 20, 30, 40);
-    cc::CompositorFrame frame =
-        MakeDelegatedFrame(1.f, frame_size, dropped_damage_rect);
-    frame.metadata.begin_frame_ack = ack;
-    view_->SubmitCompositorFrame(local_surface_id, std::move(frame));
-    view_->RunOnCompositingDidCommit();
-    ack.latest_confirmed_sequence_number =
-        cc::BeginFrameArgs::kInvalidFrameNumber;
-    ack.has_damage = false;
-    EXPECT_EQ(ack, source.LastAckForObserver(observer_tracker.last_observer_));
-  }
-
-  {
-    cc::BeginFrameArgs args = cc::CreateBeginFrameArgsForTesting(
-        BEGINFRAME_FROM_HERE, source_id, 11u);
-    source.TestOnBeginFrame(args);
-
-    // Explicit ack through OnDidNotProduceFrame is forwarded with invalid
-    // latest_confirmed_sequence_number.
-    cc::BeginFrameAck ack(source_id, 11, 11, false);
-    view_->OnDidNotProduceFrame(ack);
-    ack.latest_confirmed_sequence_number =
-        cc::BeginFrameArgs::kInvalidFrameNumber;
-    EXPECT_EQ(ack, source.LastAckForObserver(observer_tracker.last_observer_));
-  }
-
-  // Unlock the compositor again with a new CompositorFrame of correct size.
-  frame_size = view_rect.size();
-  local_surface_id = local_surface_id_allocator_.GenerateId();
-
-  {
-    cc::BeginFrameArgs args = cc::CreateBeginFrameArgsForTesting(
-        BEGINFRAME_FROM_HERE, source_id, 12u);
-    source.TestOnBeginFrame(args);
-
-    // Ack from CompositorFrame is forwarded.
-    cc::BeginFrameAck ack(source_id, 12, 12, true);
-    cc::CompositorFrame frame = MakeDelegatedFrame(1.f, frame_size, view_rect);
-    frame.metadata.begin_frame_ack = ack;
-    view_->SubmitCompositorFrame(local_surface_id, std::move(frame));
-    view_->RunOnCompositingDidCommit();
-    EXPECT_EQ(ack, source.LastAckForObserver(observer_tracker.last_observer_));
-  }
-
-  {
-    cc::BeginFrameArgs args = cc::CreateBeginFrameArgsForTesting(
-        BEGINFRAME_FROM_HERE, source_id, 13u);
-    source.TestOnBeginFrame(args);
-
-    // Explicit ack through OnDidNotProduceFrame is forwarded.
-    cc::BeginFrameAck ack(source_id, 13, 13, false);
-    view_->OnDidNotProduceFrame(ack);
-    EXPECT_EQ(ack, source.LastAckForObserver(observer_tracker.last_observer_));
-  }
-
-  surface_manager->UnregisterBeginFrameSource(&source);
-}
+// TODO(eseckler): Add back tests for BeginFrameAck forwarding through
+// RenderWidgetHostViewAura and CompositorFrameSinkSupport when we add plumbing
+// of BeginFrameAcks through SurfaceObservers.
 
 class RenderWidgetHostViewAuraCopyRequestTest
     : public RenderWidgetHostViewAuraShutdownTest {