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

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 50 matching lines @@
   // initial position.
   virtual void AddNewContents(TabContents* source,
                               TabContents* new_contents,
                               WindowOpenDisposition disposition,
                               const gfx::Rect& initial_pos,
                               bool user_gesture) = 0;
 
   // Selects the specified contents, bringing its container to the front.
   virtual void ActivateContents(TabContents* contents) = 0;
 
+  // Deactivates the specified contents by deactivating its container and
+  // potentialy moving it to the back of the Z order.
+  virtual void DeactivateContents(TabContents* contents) = 0;
+
   // Notifies the delegate that this contents is starting or is done loading
   // some resource. The delegate should use this notification to represent
   // loading feedback. See TabContents::is_loading()
   virtual void LoadingStateChanged(TabContents* source) = 0;
 
   // Request the delegate to close this tab contents, and do whatever cleanup
   // it needs to do.
   virtual void CloseContents(TabContents* source) = 0;
 
   // Request the delegate to move this tab contents to the specified position
@@ skipping 91 matching lines @@
   // 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
   // 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 84 matching lines @@
   // Sent when the user does a gesture that results in committing the match
   // preview. The delegate should replace |source| with the |source|'s match
   // preview TabContents.
   virtual void CommitMatchPreview(TabContents* source);
 
  protected:
   virtual ~TabContentsDelegate();
 };
 
 #endif  // CHROME_BROWSER_TAB_CONTENTS_TAB_CONTENTS_DELEGATE_H_