Add latency measurement system

webkit/compositor_bindings/web_layer_tree_view_impl.cc

Index: webkit/compositor_bindings/web_layer_tree_view_impl.cc
diff --git a/webkit/compositor_bindings/web_layer_tree_view_impl.cc b/webkit/compositor_bindings/web_layer_tree_view_impl.cc
index 33f29bb0a5f401bfd1cc4c37fe00a4d9a244f84b..d104e9951bf0cd45e9174aac754b03640cc8a993 100644
--- a/webkit/compositor_bindings/web_layer_tree_view_impl.cc
+++ b/webkit/compositor_bindings/web_layer_tree_view_impl.cc
@@ -20,6 +20,7 @@
 #include "third_party/WebKit/Source/Platform/chromium/public/WebSize.h"
 #include "web_layer_impl.h"
 #include "web_to_ccinput_handler_adapter.h"
+#include "webkit/compositor_bindings/web_latency_info_impl.h"
 #include "webkit/compositor_bindings/web_rendering_stats_impl.h"
 
 using namespace cc;
@@ -223,6 +224,11 @@ void WebLayerTreeViewImpl::loseCompositorContext(int numTimes)
     m_layerTreeHost->loseOutputSurface(numTimes);
 }
 
+void WebLayerTreeViewImpl::setLatencyInfo(const WebKit::WebLatencyInfo& latencyInfo)
+{
+    m_layerTreeHost->setLatencyInfo(static_cast<const WebKit::WebLatencyInfoImpl&>(latencyInfo).latency_info);
+}
+
 void WebLayerTreeViewImpl::willBeginFrame()
 {
     m_client->willBeginFrame();
@@ -293,4 +299,11 @@ void WebLayerTreeViewImpl::scheduleComposite()
     m_client->scheduleComposite();
 }
 
+void WebLayerTreeViewImpl::onReceivedLatencyInfo(const cc::LatencyInfo& latencyInfo)
+{
+    WebKit::WebLatencyInfoImpl latencyInfoImpl;
+    latencyInfoImpl.latency_info = latencyInfo;
+    m_client->onReceivedLatencyInfo(static_cast<const WebKit::WebLatencyInfo&>(latencyInfoImpl));
+}
+
 } // namespace WebKit