Making window.focus() work in Chrome

chrome/browser/renderer_host/render_view_host_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_RENDERER_HOST_RENDER_VIEW_HOST_DELEGATE_H_
 #define CHROME_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_DELEGATE_H_
 #pragma once
 
 #include <string>
 #include <vector>
@@ skipping 134 matching lines @@
                                const SkBitmap& image,
                                const gfx::Point& image_offset) = 0;
 
     // The page wants to update the mouse cursor during a drag & drop operation.
     // |operation| describes the current operation (none, move, copy, link.)
     virtual void UpdateDragCursor(WebKit::WebDragOperation operation) = 0;
 
     // Notification that view for this delegate got the focus.
     virtual void GotFocus() = 0;
 
-    // Callback to inform the browser it should take back focus. If reverse is
-    // true, it means the focus was retrieved by doing a Shift-Tab.
+    // Callback to inform the browser that the page is returning the focus to
+    // the browser's chrome. If reverse is true, it means the focus was
+    // retrieved by doing a Shift-Tab.
     virtual void TakeFocus(bool reverse) = 0;
 
+    // The page wants the hosting window to activate/deactivate itself (it
+    // called the JavaScript window.focus()/blur() method).
+    virtual void Activate() = 0;
+    virtual void Deactivate() = 0;
+
     // Callback to give the browser a chance to handle the specified keyboard
     // event before sending it to the renderer.
     // Returns true if the |event| was handled. Otherwise, if the |event| would
     // be handled in HandleKeyboardEvent() method as a normal keyboard shortcut,
     // |*is_keyboard_shortcut| should be set to true.
     virtual bool PreHandleKeyboardEvent(const NativeWebKeyboardEvent& event,
                                         bool* is_keyboard_shortcut) = 0;
 
     // Callback to inform the browser that the renderer did not process the
     // specified events. This gives an opportunity to the browser to process the
@@ skipping 630 matching lines @@
   virtual void FocusedNodeChanged() {}
 
   // The content being displayed is a PDF.
   virtual void SetDisplayingPDFContent() {}
 
  protected:
   virtual ~RenderViewHostDelegate() {}
 };
 
 #endif  // CHROME_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_DELEGATE_H_