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 2f44c793daecbcc757058fa41a4798b9fc25898e..63920bb5341e3d84a763b5d4b5d58306c105bf89 100644
--- a/content/renderer/render_widget.cc
+++ b/content/renderer/render_widget.cc
@@ -676,6 +676,7 @@ 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");
 
@@ -685,6 +686,9 @@ 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());