Making window.focus() work in Chrome

chrome/browser/tab_contents/tab_contents_delegate.cc

 // 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.
 
 #include "chrome/browser/tab_contents/tab_contents_delegate.h"
 
 void TabContentsDelegate::DetachContents(TabContents* source) {
 }
 
 bool TabContentsDelegate::IsPopup(const TabContents* source) const {
@@ skipping 50 matching lines @@
 TabContentsDelegate::CreateExtensionFunctionDispatcher(
     RenderViewHost* render_view_host,
     const std::string& extension_id) {
   return NULL;
 }
 
 bool TabContentsDelegate::TakeFocus(bool reverse) {
   return false;
 }
 
+void TabContentsDelegate::Activate() {
+}
+
+void TabContentsDelegate::Deactivate(){
+}
+
 void TabContentsDelegate::SetTabContentBlocked(
     TabContents* contents, bool blocked) {
 }
 
 void TabContentsDelegate::TabContentsFocused(TabContents* tab_content) {
 }
 
 int TabContentsDelegate::GetExtraRenderViewHeight() const {
   return 0;
 }
@@ skipping 79 matching lines @@
 }
 
 void TabContentsDelegate::UpdatePreferredSize(const gfx::Size& pref_size) {
 }
 
 void TabContentsDelegate::ContentTypeChanged(TabContents* source) {
 }
 
 TabContentsDelegate::~TabContentsDelegate() {
 }