Fork cc::OutputSurface into cc::CompositorFrameSink.

cc/test/fake_channel_impl.h

Index: cc/test/fake_channel_impl.h
diff --git a/cc/test/fake_channel_impl.h b/cc/test/fake_channel_impl.h
index e197706456e52ea2f0d53ed006d02e7a7052087b..ba042fe786f53cb9203e3400411dc1486d39e36d 100644
--- a/cc/test/fake_channel_impl.h
+++ b/cc/test/fake_channel_impl.h
@@ -20,9 +20,9 @@ class FakeChannelImpl : public ChannelImpl {
   void BeginMainFrameNotExpectedSoon() override {}
   void DidCommitAndDrawFrame() override {}
   void SetAnimationEvents(std::unique_ptr<AnimationEvents> queue) override;
-  void DidLoseOutputSurface() override {}
-  void RequestNewOutputSurface() override {}
-  void DidInitializeOutputSurface(bool success) override {}
+  void DidLoseCompositorFrameSink() override {}
+  void RequestNewCompositorFrameSink() override {}
+  void DidInitializeCompositorFrameSink(bool success) override {}
   void DidCompletePageScaleAnimation() override {}
   void BeginMainFrame(std::unique_ptr<BeginMainFrameAndCommitState>
                           begin_main_frame_state) override {}