Use RWH instead of RWHV to know whether a frame is focus.

content/browser/renderer_host/render_widget_host_impl.h

Index: content/browser/renderer_host/render_widget_host_impl.h
diff --git a/content/browser/renderer_host/render_widget_host_impl.h b/content/browser/renderer_host/render_widget_host_impl.h
index 99f2aa3433e4051de1d0b20b9571d2c1a71d742a..1ea010dedd143e04c260efd20cd75d704ae91884 100644
--- a/content/browser/renderer_host/render_widget_host_impl.h
+++ b/content/browser/renderer_host/render_widget_host_impl.h
@@ -228,6 +228,9 @@ class CONTENT_EXPORT RenderWidgetHostImpl
   virtual void GotFocus();
   virtual void LostCapture();
 
+  // Indicates whether the frame is currently focused.
+  bool is_focused() const { return is_focused_; }
+
   // Called to notify the RenderWidget that it has lost the mouse lock.
   virtual void LostMouseLock();
 
@@ -841,6 +844,11 @@ class CONTENT_EXPORT RenderWidgetHostImpl
   // object does not self destroy.
   bool owned_by_render_frame_host_;
 
+  // Indicates whether this frame is focused. This is trying to match what the
+  // renderer process knows. It is different from RenderWidgetHostView::HasFocus
+  // in that regard.

[Charlie Reis, 2015/02/02 18:34:49]

Please be more specific here: when is different from RWHV?

+  bool is_focused_;
+
   base::WeakPtrFactory<RenderWidgetHostImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostImpl);