Deliver IPC messages together with SwapCompositorFrame

content/renderer/gpu/render_widget_compositor.h

 // Copyright (c) 2013 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_RENDERER_GPU_RENDER_WIDGET_COMPOSITOR_H_
 #define CONTENT_RENDERER_GPU_RENDER_WIDGET_COMPOSITOR_H_
 
 #include "base/callback.h"
 #include "base/memory/weak_ptr.h"
 #include "base/time/time.h"
 #include "base/values.h"
 #include "cc/base/swap_promise.h"
 #include "cc/base/swap_promise_monitor.h"
 #include "cc/input/top_controls_state.h"
 #include "cc/trees/layer_tree_host_client.h"
 #include "cc/trees/layer_tree_host_single_thread_client.h"
 #include "cc/trees/layer_tree_settings.h"
 #include "third_party/WebKit/public/platform/WebLayerTreeView.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "ui/gfx/rect.h"
 
 namespace ui {
 struct LatencyInfo;
 }
 
 namespace cc {
 class InputHandler;
 class Layer;
 class LayerTreeHost;
+class SwapPromise;
 }
 
 namespace content {
 class RenderWidget;
 
 class RenderWidgetCompositor : public blink::WebLayerTreeView,
                                public cc::LayerTreeHostClient,
                                public cc::LayerTreeHostSingleThreadClient {
  public:
   // Attempt to construct and initialize a compositor instance for the widget
@@ skipping 21 matching lines @@
   // LatencyInfoSwapPromiseMonitor. During the life time of the
   // LatencyInfoSwapPromiseMonitor, if SetNeedsCommit() or SetNeedsUpdateLayer()
   // is called on LayerTreeHost, the original latency info will be turned
   // into a LatencyInfoSwapPromise.
   scoped_ptr<cc::SwapPromiseMonitor> CreateLatencyInfoSwapPromiseMonitor(
       ui::LatencyInfo* latency);
   // Calling QueueSwapPromise() to directly queue a SwapPromise into
   // LayerTreeHost.
   void QueueSwapPromise(scoped_ptr<cc::SwapPromise> swap_promise);
   int GetLayerTreeId() const;
+  int GetSourceFrameNumber() const;
   void NotifyInputThrottledUntilCommit();
   const cc::Layer* GetRootLayer() const;
   int ScheduleMicroBenchmark(
       const std::string& name,
       scoped_ptr<base::Value> value,
       const base::Callback<void(scoped_ptr<base::Value>)>& callback);
   bool SendMessageToMicroBenchmark(int id, scoped_ptr<base::Value> value);
 
   // WebLayerTreeView implementation.
   virtual void setSurfaceReady();
@@ skipping 70 matching lines @@
 
   bool threaded_;
   bool suppress_schedule_composite_;
   RenderWidget* widget_;
   scoped_ptr<cc::LayerTreeHost> layer_tree_host_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_GPU_RENDER_WIDGET_COMPOSITOR_H_