Fix X11DesktopHandler::ActivateWindow on Unity for known user gestures

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 <string>
 
 #include "base/basictypes.h"
@@ skipping 143 matching lines @@
   // warning shown to the user.
   virtual void RendererResponsive(RenderViewHost* render_view_host) {}
 
   // Notification that the RenderViewHost's load state changed.
   virtual void LoadStateChanged(const GURL& url,
                                 const net::LoadStateWithParam& load_state,
                                 uint64 upload_position,
                                 uint64 upload_size) {}
 
   // The page wants the hosting window to activate/deactivate itself (it
-  // called the JavaScript window.focus()/blur() method).
+  // called the JavaScript window.focus()/blur() method). Use the ForUserGesture
+  // variant if the JavaScript was running in response to a user gesture.
   virtual void Activate() {}
+  virtual void ActivateForUserGesture();
   virtual void Deactivate() {}
 
   // Notification that the view has lost capture.
   virtual void LostCapture() {}
 
   // Called when a file selection is to be done.
   virtual void RunFileChooser(
       RenderViewHost* render_view_host,
       const FileChooserParams& params) {}
 
@@ skipping 95 matching lines @@
   virtual void SetIsVirtualKeyboardRequested(bool requested) {}
   virtual bool IsVirtualKeyboardRequested();
 
  protected:
   virtual ~RenderViewHostDelegate() {}
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_DELEGATE_H_