Making window.focus() work in Chrome

chrome/browser/tab_contents/tab_contents_delegate.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_TAB_CONTENTS_TAB_CONTENTS_DELEGATE_H_
 #define CHROME_BROWSER_TAB_CONTENTS_TAB_CONTENTS_DELEGATE_H_
 #pragma once
 
 #include <string>
 
@@ skipping 152 matching lines @@
   // this to disable inactive rendering for the frame in the window the select
   // is opened within if necessary.
   virtual void RenderWidgetShowing();
 
   // This is used when the contents is an extension that needs to route
   // api calls through to the Browser process.
   virtual ExtensionFunctionDispatcher* CreateExtensionFunctionDispatcher(
       RenderViewHost* render_view_host,
       const std::string& extension_id);
 
-  // This is called when webkit tells us that it is done tabbing through
+  // This is called when WebKit tells us that it is done tabbing through
   // controls on the page. Provides a way for TabContentsDelegates to handle
   // this. Returns true if the delegate successfully handled it.
   virtual bool TakeFocus(bool reverse);
 
+  // Called by WebKit to notify that the page requested the tab hosting window
+  // to be activated/deactivated (by calling window.focus()/blur()).
+  virtual void Activate();
+  virtual void Deactivate();
+
   // Changes the blocked state of the tab at |index|. TabContents are
   // considered blocked while displaying a tab modal dialog. During that time
   // renderer host will ignore any UI interaction within TabContent outside of
   // the currently displaying dialog.
   virtual void SetTabContentBlocked(TabContents* contents, bool blocked);
 
   // Notification that |tab_contents| has gained focus.
   virtual void TabContentsFocused(TabContents* tab_content);
 
   // Return much extra vertical space should be allotted to the
@@ skipping 82 matching lines @@
   // Notifies the delegate that something has changed about what content the
   // TabContents is displaying. Currently this is only fired when displaying
   // PDF using the internal PDF plugin.
   virtual void ContentTypeChanged(TabContents* source);
 
  protected:
   virtual ~TabContentsDelegate();
 };
 
 #endif  // CHROME_BROWSER_TAB_CONTENTS_TAB_CONTENTS_DELEGATE_H_