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 80c5e23dc0647583c27ea666732880c052f6f29f..a5136ce21b3dae423a2e5a5ab86a0b9215371554 100644
--- a/content/browser/renderer_host/render_widget_host_impl.h
+++ b/content/browser/renderer_host/render_widget_host_impl.h
@@ -228,6 +228,15 @@ class CONTENT_EXPORT RenderWidgetHostImpl
   virtual void GotFocus();
   virtual void LostCapture();
 
+  // Indicates whether the RenderWidgetHost thinks it is focused.
+  // This is different from RenderWidgetHostView::HasFocus() in the sense that
+  // it reflects what the renderer process knows: it saves the state that is
+  // sent/received.
+  // RenderWidgetHostView::HasFocus() is checking whether the view is focused so
+  // it is possible in some edge cases that a view was requested to be focused
+  // but it failed, thus HasFocus() returns false.
+  bool is_focused() const { return is_focused_; }
+
   // Called to notify the RenderWidget that it has lost the mouse lock.
   virtual void LostMouseLock();
 
@@ -841,6 +850,12 @@ class CONTENT_EXPORT RenderWidgetHostImpl
   // object does not self destroy.
   bool owned_by_render_frame_host_;
 
+  // Indicates whether this RenderWidgetHost thinks is focused. This is trying
+  // to match what the renderer process knows. It is different from
+  // RenderWidgetHostView::HasFocus in that in that the focus request may fail,
+  // causing HasFocus to return false when is_focused_ is true.
+  bool is_focused_;
+
   base::WeakPtrFactory<RenderWidgetHostImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostImpl);