cc: Introduce BeginFrame sequence numbers and acknowledgements.

content/browser/android/synchronous_compositor_browser_filter.h

 // Copyright 2016 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.
 
 #ifndef CONTENT_BROWSER_ANDROID_SYNCHRONOUS_COMPOSITOR_BROWSER_FILTER_H_
 #define CONTENT_BROWSER_ANDROID_SYNCHRONOUS_COMPOSITOR_BROWSER_FILTER_H_
 
 #include <deque>
 #include <map>
 #include <vector>
 
 #include "base/macros.h"
 #include "base/synchronization/lock.h"
+#include "cc/output/begin_frame_args.h"
 #include "cc/output/compositor_frame_metadata.h"
+#include "cc/scheduler/begin_frame_source.h"
 #include "content/public/browser/android/synchronous_compositor.h"
 #include "content/public/browser/browser_message_filter.h"
 #include "ui/android/window_android_observer.h"
 
 namespace ui {
 class WindowAndroid;
 }
 
 namespace content {
 
 class RenderProcessHost;
 class SynchronousCompositorHost;
 
-class SynchronousCompositorBrowserFilter : public ui::WindowAndroidObserver,
+class SynchronousCompositorBrowserFilter : public cc::BeginFrameObserver,
                                            public BrowserMessageFilter {
  public:
   explicit SynchronousCompositorBrowserFilter(int process_id);
 
-  // WindowAndroidObserver overrides.
-  void OnCompositingDidCommit() override;
-  void OnRootWindowVisibilityChanged(bool visible) override;
-  void OnAttachCompositor() override;
-  void OnDetachCompositor() override;
-  void OnVSync(base::TimeTicks frame_time,
-               base::TimeDelta vsync_period) override;
-  void OnActivityStopped() override;
-  void OnActivityStarted() override;
+  // cc::BeginFrameObserver overrides.
+  void OnBeginFrame(const cc::BeginFrameArgs& args) override;
+  const cc::BeginFrameArgs& LastUsedBeginFrameArgs() const override;
+  void OnBeginFrameSourcePausedChanged(bool paused) override;
 
   // BrowserMessageFilter overrides.
   bool OnMessageReceived(const IPC::Message& message) override;
   void OnFilterAdded(IPC::Channel* channel) override;
   void OnFilterRemoved() override;
   void OnChannelClosing() override;
 
   void SyncStateAfterVSync(ui::WindowAndroid* window_android,
                            SynchronousCompositorHost* compositor_host);
 
@@ skipping 30 matching lines @@
   // This object is per renderer process, so routing_id is unique.
   using FrameFutureMap = std::map<int, FrameFutureQueue>;
   FrameFutureMap future_map_;
 
   DISALLOW_COPY_AND_ASSIGN(SynchronousCompositorBrowserFilter);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_ANDROID_SYNCHRONOUS_COMPOSITOR_BROWSER_FILTER_H_