Making window.focus()/blur() work only when there is a user gesture.

chrome/browser/external_tab_container_win.h

 // Copyright (c) 2010 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 CHROME_BROWSER_EXTERNAL_TAB_CONTAINER_WIN_H_
 #define CHROME_BROWSER_EXTERNAL_TAB_CONTAINER_WIN_H_
 #pragma once
 
 #include <vector>
 #include <map>
@@ skipping 99 matching lines @@
                               WindowOpenDisposition disposition,
                               PageTransition::Type transition);
   virtual void NavigationStateChanged(const TabContents* source,
                                       unsigned changed_flags);
   virtual void AddNewContents(TabContents* source,
                               TabContents* new_contents,
                               WindowOpenDisposition disposition,
                               const gfx::Rect& initial_pos,
                               bool user_gesture);
   virtual void ActivateContents(TabContents* contents);
+  virtual void DeactivateContents(TabContents* contents);
   virtual void LoadingStateChanged(TabContents* source);
   virtual void CloseContents(TabContents* source);
   virtual void MoveContents(TabContents* source, const gfx::Rect& pos);
   virtual void URLStarredChanged(TabContents* source, bool starred);
   virtual void UpdateTargetURL(TabContents* source, const GURL& url);
   virtual void ContentsZoomChange(bool zoom_in);
   virtual void ToolbarSizeChanged(TabContents* source, bool is_animating);
   virtual void ForwardMessageToExternalHost(const std::string& message,
                                             const std::string& origin,
                                             const std::string& target);
@@ skipping 195 matching lines @@
 
   views::View* external_tab_view_;
 
   gfx::NativeWindow notification_window_;
   int notification_message_;
 
   DISALLOW_COPY_AND_ASSIGN(ExternalTabContainer);
 };
 
 #endif  // CHROME_BROWSER_EXTERNAL_TAB_CONTAINER_WIN_H_