Add latency measurement system

content/browser/renderer_host/render_widget_host_view_aura.h

 // Copyright (c) 2012 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_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_AURA_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_AURA_H_
 
 #include <map>
+#include <queue>
 #include <vector>
 
 #include "base/callback.h"
 #include "base/gtest_prod_util.h"
 #include "base/memory/linked_ptr.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "content/browser/renderer_host/image_transport_factory.h"
 #include "content/browser/renderer_host/render_widget_host_view_base.h"
 #include "content/common/content_export.h"
 #include "third_party/skia/include/core/SkRegion.h"
 #include "ui/aura/client/activation_change_observer.h"
 #include "ui/aura/client/activation_delegate.h"
 #include "ui/aura/client/focus_change_observer.h"
 #include "ui/aura/window_delegate.h"
 #include "ui/base/ime/text_input_client.h"
 #include "ui/compositor/compositor.h"
 #include "ui/compositor/compositor_observer.h"
 #include "ui/gfx/display_observer.h"
 #include "ui/gfx/rect.h"
+#include "webkit/compositor_bindings/web_latency_info_impl.h"
 #include "webkit/glue/webcursor.h"
 
 namespace aura {
 class WindowTracker;
 }
 
 namespace gfx {
 class Canvas;
 class Display;
 }
@@ skipping 186 matching lines @@
   class WindowObserver;
   friend class WindowObserver;
 
   // Overridden from ui::CompositorObserver:
   virtual void OnCompositingDidCommit(ui::Compositor* compositor) OVERRIDE;
   virtual void OnCompositingStarted(ui::Compositor* compositor) OVERRIDE;
   virtual void OnCompositingEnded(ui::Compositor* compositor) OVERRIDE;
   virtual void OnCompositingAborted(ui::Compositor* compositor) OVERRIDE;
   virtual void OnCompositingLockStateChanged(
       ui::Compositor* compositor) OVERRIDE;
+  virtual void OnReceivedLatencyInfo(ui::Compositor* compositor,
+      const WebKit::WebLatencyInfoImpl& latency_info) OVERRIDE;
 
   // Overridden from ImageTransportFactoryObserver:
   virtual void OnLostResources() OVERRIDE;
 
   virtual ~RenderWidgetHostViewAura();
 
   void UpdateCursorIfOverSelf();
   bool ShouldSkipFrame(const gfx::Size& size);
   void UpdateExternalTexture();
   ui::InputMethod* GetInputMethod() const;
@@ skipping 185 matching lines @@
     YES,
     // We locked, so at some point we'll need to kick a frame.
     YES_DID_LOCK,
     // No. A lock timed out, we need to kick a new frame before locking again.
     NO_PENDING_RENDERER_FRAME,
     // No. We've got a frame, but it hasn't been committed.
     NO_PENDING_COMMIT,
   };
   CanLockCompositorState can_lock_compositor_;
 
+  struct FrameLatency {
+    WebKit::WebLatencyInfoImpl latency_info;
+    int route_id;
+    int gpu_host_id;
+  };
+
+  std::queue<FrameLatency> frame_queue_;
+
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewAura);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_AURA_H_