Add latency info to input events sent to RenderWidget.

content/renderer/render_widget.cc

Index: content/renderer/render_widget.cc
diff --git a/content/renderer/render_widget.cc b/content/renderer/render_widget.cc
index 074870e483d68a12cb7a51db7942deda43556382..6c1524366fd1c9947526d00615e7b81ffc600333 100644
--- a/content/renderer/render_widget.cc
+++ b/content/renderer/render_widget.cc
@@ -703,6 +703,7 @@ void RenderWidget::OnViewContextSwapBuffersComplete() {
 }
 
 void RenderWidget::OnHandleInputEvent(const WebKit::WebInputEvent* input_event,
+                                      const cc::LatencyInfo& latency_info,
                                       bool is_keyboard_shortcut) {
   TRACE_EVENT0("renderer", "RenderWidget::OnHandleInputEvent");
 
@@ -712,6 +713,9 @@ void RenderWidget::OnHandleInputEvent(const WebKit::WebInputEvent* input_event,
     return;
   }
 
+  if (compositor_)
+    compositor_->SetLatencyInfo(latency_info);
+
   base::TimeDelta now = base::TimeDelta::FromInternalValue(
       base::TimeTicks::Now().ToInternalValue());