Add Keyboard Latency UMA Metrics.

content/browser/renderer_host/render_widget_host_view_aura.h

Index: content/browser/renderer_host/render_widget_host_view_aura.h
diff --git a/content/browser/renderer_host/render_widget_host_view_aura.h b/content/browser/renderer_host/render_widget_host_view_aura.h
index 489ebc43422d6b0766dd5d33e22ec172edaa4c76..0e157f9dc135ac6b0430c0c0d5ad0c4e0757423e 100644
--- a/content/browser/renderer_host/render_widget_host_view_aura.h
+++ b/content/browser/renderer_host/render_widget_host_view_aura.h
@@ -312,8 +312,9 @@ class CONTENT_EXPORT RenderWidgetHostViewAura
 
   // RenderWidgetHostViewEventHandler::Delegate:
   gfx::Rect ConvertRectToScreen(const gfx::Rect& rect) const override;
-  void ForwardKeyboardEvent(const NativeWebKeyboardEvent& event,
-                            bool* update_event) override;
+  void ForwardKeyboardEventWithLatencyInfo(const NativeWebKeyboardEvent& event,
+                                           const ui::LatencyInfo& latency,
+                                           bool* update_event) override;
   RenderFrameHostImpl* GetFocusedFrame();
   bool NeedsMouseCapture() override;
   void SetTooltipsEnabled(bool enable) override;