Support tracking focused node element for OOPIFs.

content/browser/renderer_host/render_view_host_delegate.h

 // Copyright (c) 2012 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_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_DELEGATE_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_DELEGATE_H_
 
 #include <stdint.h>
 
 #include <string>
@@ skipping 212 matching lines @@
 
   // Whether the user agent is overridden using the Chrome for Android "Request
   // Desktop Site" feature.
   virtual bool IsOverridingUserAgent();
 
   virtual bool IsJavaScriptDialogShowing() const;
 
   // Whether download UI should be hidden.
   virtual bool HideDownloadUI() const;
 
+  // Whether the focused element on the page is editable. This returns true iff
+  // the focused frame has a focused editable element.
+  virtual bool IsFocusedElementEditable();
+
+  // Asks the delegate to clear the focused element. This will lead to an IPC to
+  // the focused RenderWidget.
+  virtual void ClearFocusedElement() {}
+
  protected:
   virtual ~RenderViewHostDelegate() {}
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_DELEGATE_H_