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

chrome/browser/browser.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_BROWSER_H_
 #define CHROME_BROWSER_BROWSER_H_
 #pragma once
 
 #include <map>
 #include <set>
@@ skipping 685 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 DetachContents(TabContents* source);
   virtual bool IsPopup(const TabContents* source) const;
   virtual bool CanReloadContents(TabContents* source) const;
   virtual void ToolbarSizeChanged(TabContents* source, bool is_animating);
   virtual void URLStarredChanged(TabContents* source, bool starred);
   virtual void UpdateTargetURL(TabContents* source, const GURL& url);
   virtual void ContentsMouseEvent(
       TabContents* source, const gfx::Point& location, bool motion);
   virtual void ContentsZoomChange(bool zoom_in);
   virtual void OnContentSettingsChange(TabContents* source);
   virtual void SetTabContentBlocked(TabContents* contents, bool blocked);
   virtual void TabContentsFocused(TabContents* tab_content);
   virtual bool TakeFocus(bool reverse);
-  virtual void Activate();
-  virtual void Deactivate();
   virtual bool IsApplication() const;
   virtual void ConvertContentsToApplication(TabContents* source);
   virtual bool ShouldDisplayURLField();
   virtual gfx::Rect GetRootWindowResizerRect() const;
   virtual void ShowHtmlDialog(HtmlDialogUIDelegate* delegate,
                               gfx::NativeWindow parent_window);
   virtual void BeforeUnloadFired(TabContents* source,
                                  bool proceed,
                                  bool* proceed_to_fire_unload);
   virtual void SetFocusToLocationBar(bool select_all);
@@ skipping 335 matching lines @@
   mutable BooleanPrefMember use_vertical_tabs_;
 
   // The profile's tab restore service. The service is owned by the profile,
   // and we install ourselves as an observer.
   TabRestoreService* tab_restore_service_;
 
   DISALLOW_COPY_AND_ASSIGN(Browser);
 };
 
 #endif  // CHROME_BROWSER_BROWSER_H_