Add latency measurement system

webkit/compositor_bindings/web_layer_tree_view_impl.h

Index: webkit/compositor_bindings/web_layer_tree_view_impl.h
diff --git a/webkit/compositor_bindings/web_layer_tree_view_impl.h b/webkit/compositor_bindings/web_layer_tree_view_impl.h
index d9563d13ad6fd6490d3231d1900c459e9d490588..a02d0b919c8afbdf7afde9e7e911fb7a4d86851b 100644
--- a/webkit/compositor_bindings/web_layer_tree_view_impl.h
+++ b/webkit/compositor_bindings/web_layer_tree_view_impl.h
@@ -20,6 +20,8 @@ namespace WebKit {
 class WebLayer;
 class WebLayerTreeViewClient;
 class WebLayerTreeViewClientAdapter;
+struct WebLatencyInfo;
+struct WebLatencyInfoImpl;
 
 class WebLayerTreeViewImpl : public WebLayerTreeView, public cc::LayerTreeHostClient {
 public:
@@ -59,6 +61,7 @@ public:
     virtual void setShowPaintRects(bool show);
     virtual void setContinuousPaintingEnabled(bool);
     virtual void loseCompositorContext(int numTimes) OVERRIDE;
+    virtual void setLatencyInfo(const WebKit::WebLatencyInfo&) OVERRIDE;
 
     // cc::LayerTreeHostClient implementation.
     virtual void willBeginFrame() OVERRIDE;
@@ -75,6 +78,7 @@ public:
     virtual void didCompleteSwapBuffers() OVERRIDE;
     virtual void scheduleComposite() OVERRIDE;
     virtual scoped_ptr<cc::FontAtlas> createFontAtlas();
+    virtual void onReceivedLatencyInfo(const cc::LatencyInfo&) OVERRIDE;
 
 private:
     WebLayerTreeViewClient* m_client;