Add RenderFrameObserver::FocusedNodeChanged

content/public/renderer/render_frame_observer.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_PUBLIC_RENDERER_RENDER_FRAME_OBSERVER_H_
 #define CONTENT_PUBLIC_RENDERER_RENDER_FRAME_OBSERVER_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/strings/string16.h"
 #include "content/common/content_export.h"
 #include "ipc/ipc_listener.h"
 #include "ipc/ipc_sender.h"
 #include "v8/include/v8.h"
 
 namespace blink {
 class WebFormElement;
 class WebFrame;
+class WebNode;
 struct WebURLError;
 }
 
 namespace content {
 
 class RendererPpapiHost;
 class RenderFrame;
 class RenderFrameImpl;
 
 // Base class for objects that want to filter incoming IPCs, and also get
@@ skipping 49 matching lines @@
   // "\n    at function_name (source:line_number:column_number)").
   virtual void DetailedConsoleMessageAdded(const base::string16& message,
                                            const base::string16& source,
                                            const base::string16& stack_trace,
                                            int32 line_number,
                                            int32 severity_level) {}
 
   // Called when a compositor frame has committed.
   virtual void DidCommitCompositorFrame() {}
 
+  // Called when the focused node has changed to |node|.
+  virtual void FocusedNodeChanged(const blink::WebNode& node) {}
+
   // IPC::Listener implementation.
   bool OnMessageReceived(const IPC::Message& message) override;
 
   // IPC::Sender implementation.
   bool Send(IPC::Message* message) override;
 
   RenderFrame* render_frame() const;
   int routing_id() const { return routing_id_; }
 
  protected:
@@ skipping 10 matching lines @@
   RenderFrame* render_frame_;
   // The routing ID of the associated RenderFrame.
   int routing_id_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderFrameObserver);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_RENDERER_RENDER_FRAME_OBSERVER_H_