Expose whether a frame is focused to the browser process

content/browser/frame_host/render_frame_host_impl.h

Index: content/browser/frame_host/render_frame_host_impl.h
diff --git a/content/browser/frame_host/render_frame_host_impl.h b/content/browser/frame_host/render_frame_host_impl.h
index 7b40b9da8db2ce29171cdd0deb5eb32f3fcfcf0d..57dfc44f60b1da341fcca16eb7f91ce79d4df868 100644
--- a/content/browser/frame_host/render_frame_host_impl.h
+++ b/content/browser/frame_host/render_frame_host_impl.h
@@ -128,9 +128,10 @@ class CONTENT_EXPORT RenderFrameHostImpl
   void ExecuteJavaScript(const base::string16& javascript,
                          const JavaScriptResultCallback& callback) override;
   void ExecuteJavaScriptForTests(const base::string16& javascript) override;
+  void ActivateFindInPageResultForAccessibility(int request_id) override;
   RenderViewHost* GetRenderViewHost() override;
   ServiceRegistry* GetServiceRegistry() override;
-  void ActivateFindInPageResultForAccessibility(int request_id) override;
+  bool IsFocused() const override;
 
   // IPC::Sender
   bool Send(IPC::Message* msg) override;
@@ -195,7 +196,7 @@ class CONTENT_EXPORT RenderFrameHostImpl
   FrameTreeNode* frame_tree_node() { return frame_tree_node_; }
   // TODO(nasko): The RenderWidgetHost will be owned by RenderFrameHost in
   // the future, so update this accessor to return the right pointer.
-  RenderWidgetHostImpl* GetRenderWidgetHost();
+  RenderWidgetHostImpl* GetRenderWidgetHost() const;
 
   // This function is called when this is a swapped out RenderFrameHost that
   // lives in the same process as the parent frame. The