Add latency measurement system

cc/layer_tree_host.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_H_
 #define CC_LAYER_TREE_HOST_H_
 
 #include <limits>
 
 #include "base/basictypes.h"
 #include "base/cancelable_callback.h"
 #include "base/hash_tables.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/time.h"
 #include "cc/animation_events.h"
 #include "cc/cc_export.h"
+#include "cc/latency_info.h"
 #include "cc/layer_tree_host_client.h"
 #include "cc/layer_tree_host_common.h"
 #include "cc/layer_tree_settings.h"
 #include "cc/occlusion_tracker.h"
 #include "cc/output_surface.h"
 #include "cc/prioritized_resource_manager.h"
 #include "cc/proxy.h"
 #include "cc/rate_limiter.h"
 #include "cc/rendering_stats.h"
 #include "cc/scoped_ptr_vector.h"
@@ skipping 70 matching lines @@
     virtual scoped_ptr<LayerTreeHostImpl> createLayerTreeHostImpl(LayerTreeHostImplClient*);
     void didLoseOutputSurface();
     enum RecreateResult {
         RecreateSucceeded,
         RecreateFailedButTryAgain,
         RecreateFailedAndGaveUp,
     };
     RecreateResult recreateOutputSurface();
     void didCommitAndDrawFrame() { m_client->didCommitAndDrawFrame(); }
     void didCompleteSwapBuffers() { m_client->didCompleteSwapBuffers(); }
+    void onReceivedLatencyInfo(const LatencyInfo& latencyInfo) { m_client->onReceivedLatencyInfo(latencyInfo); }
     void deleteContentsTexturesOnImplThread(ResourceProvider*);
     virtual void acquireLayerTextures();
     // Returns false if we should abort this frame due to initialization failure.
     bool initializeRendererIfNeeded();
     void updateLayers(ResourceUpdateQueue&, size_t contentsMemoryLimitBytes);
 
     LayerTreeHostClient* client() { return m_client; }
 
     void composite();
 
@@ skipping 21 matching lines @@
     // Test only hook
     void loseOutputSurface(int numTimes);
 
     void setNeedsAnimate();
     // virtual for testing
     virtual void setNeedsCommit();
     virtual void setNeedsFullTreeSync();
     void setNeedsRedraw();
     bool commitRequested() const;
 
+    void setLatencyInfo(const LatencyInfo& latency_info);
+
     void setAnimationEvents(scoped_ptr<AnimationEventsVector>, base::Time wallClockTime);
 
     Layer* rootLayer() { return m_rootLayer.get(); }
     const Layer* rootLayer() const { return m_rootLayer.get(); }
     void setRootLayer(scoped_refptr<Layer>);
 
     const LayerTreeSettings& settings() const { return m_settings; }
 
     void setDebugState(const LayerTreeDebugState& debugState);
     const LayerTreeDebugState& debugState() const { return m_debugState; }
@@ skipping 113 matching lines @@
     SkColor m_backgroundColor;
     bool m_hasTransparentBackground;
 
     typedef ScopedPtrVector<PrioritizedResource> TextureList;
     size_t m_partialTextureUpdateRequests;
 
     scoped_ptr<AnimationRegistrar> m_animationRegistrar;
 
     static bool s_needsFilterContext;
 
+    LatencyInfo m_latencyInfo;
+
     DISALLOW_COPY_AND_ASSIGN(LayerTreeHost);
 };
 
 }  // namespace cc
 
 #endif  // CC_LAYER_TREE_HOST_H_