cc: add PaintTimeCounter to keep track of per frame paint time

cc/layer_tree_host_impl.h

 // Copyright 2011 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 CC_LAYER_TREE_HOST_IMPL_H_
 #define CC_LAYER_TREE_HOST_IMPL_H_
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/time.h"
@@ skipping 16 matching lines @@
 namespace cc {
 
 class CompletionEvent;
 class CompositorFrameMetadata;
 class DebugRectHistory;
 class FrameRateCounter;
 class LayerImpl;
 class LayerTreeHostImplTimeSourceAdapter;
 class LayerTreeImpl;
 class PageScaleAnimation;
+class PaintTimeCounter;
 class RenderPassDrawQuad;
 class ResourceProvider;
 class TopControlsManager;
 struct RendererCapabilities;
 struct RenderingStats;
 
 // LayerTreeHost->Proxy callback interface.
 class LayerTreeHostImplClient {
 public:
     virtual void didLoseOutputSurfaceOnImplThread() = 0;
@@ skipping 150 matching lines @@
     bool needsUpdateDrawProperties() const { return m_needsUpdateDrawProperties; }
 
     void renderingStats(RenderingStats*) const;
 
     void sendManagedMemoryStats(
        size_t memoryVisibleBytes,
        size_t memoryVisibleAndNearbyBytes,
        size_t memoryUseBytes);
 
     FrameRateCounter* fpsCounter() const { return m_fpsCounter.get(); }
+    PaintTimeCounter* paintTimeCounter() const { return m_paintTimeCounter.get(); }
     DebugRectHistory* debugRectHistory() const { return m_debugRectHistory.get(); }
     ResourceProvider* resourceProvider() const { return m_resourceProvider.get(); }
     TopControlsManager* topControlsManager() const { return m_topControlsManager.get(); }
 
     Proxy* proxy() const { return m_proxy; }
 
     AnimationRegistrar* animationRegistrar() const { return m_animationRegistrar.get(); }
 
     void setDebugState(const LayerTreeDebugState& debugState) { m_debugState = debugState; }
     const LayerTreeDebugState& debugState() const { return m_debugState; }
 
+    void savePaintTime(const base::TimeDelta& totalPaintTime);
+
     class CC_EXPORT CullRenderPassesWithCachedTextures {
     public:
         bool shouldRemoveRenderPass(const RenderPassDrawQuad&, const FrameData&) const;
 
         // Iterates from the root first, in order to remove the surfaces closest
         // to the root with cached textures, and all surfaces that draw into
         // them.
         size_t renderPassListBegin(const RenderPassList& list) const { return list.size() - 1; }
         size_t renderPassListEnd(const RenderPassList&) const { return 0 - 1; }
         size_t renderPassListNext(size_t it) const { return it - 1; }
@@ skipping 98 matching lines @@
     scoped_ptr<TopControlsManager> m_topControlsManager;
 
     scoped_ptr<PageScaleAnimation> m_pageScaleAnimation;
 
     // This is used for ticking animations slowly when hidden.
     scoped_ptr<LayerTreeHostImplTimeSourceAdapter> m_timeSourceClientAdapter;
 
     PinchZoomViewport m_pinchZoomViewport;
 
     scoped_ptr<FrameRateCounter> m_fpsCounter;
+    scoped_ptr<PaintTimeCounter> m_paintTimeCounter;
     scoped_ptr<DebugRectHistory> m_debugRectHistory;
 
     int64 m_numImplThreadScrolls;
     int64 m_numMainThreadScrolls;
 
     int64 m_cumulativeNumLayersDrawn;
 
     int64 m_cumulativeNumMissingTiles;
 
     size_t m_lastSentMemoryVisibleBytes;
     size_t m_lastSentMemoryVisibleAndNearbyBytes;
     size_t m_lastSentMemoryUseBytes;
 
     scoped_ptr<AnimationRegistrar> m_animationRegistrar;
 
     DISALLOW_COPY_AND_ASSIGN(LayerTreeHostImpl);
 };
 
 }  // namespace cc
 
 #endif  // CC_LAYER_TREE_HOST_IMPL_H_