Making window.focus() work in Chrome

chrome/browser/extensions/extension_host.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/extensions/extension_host.h"
 
 #include <list>
 
 #include "app/l10n_util.h"
 #include "app/resource_bundle.h"
@@ skipping 636 matching lines @@
   // renderer).
   view()->RequestFocus();
 #else
   // TODO(port)
 #endif
 }
 
 void ExtensionHost::TakeFocus(bool reverse) {
 }
 
+void ExtensionHost::Activate() {
+}
+
+void ExtensionHost::Deactivate() {
+}
+
 bool ExtensionHost::PreHandleKeyboardEvent(const NativeWebKeyboardEvent& event,
                                            bool* is_keyboard_shortcut) {
   if (extension_host_type_ == ViewType::EXTENSION_POPUP &&
       event.type == NativeWebKeyboardEvent::RawKeyDown &&
       event.windowsKeyCode == base::VKEY_ESCAPE) {
     DCHECK(is_keyboard_shortcut != NULL);
     *is_keyboard_shortcut = true;
   }
   return false;
 }
@@ skipping 75 matching lines @@
     // Extensions hosted in ExternalTabContainer objects may not have
     // an associated browser.
     Browser* browser = GetBrowser();
     if (browser)
       window_id = ExtensionTabUtil::GetWindowId(browser);
   } else if (extension_host_type_ != ViewType::EXTENSION_BACKGROUND_PAGE) {
     NOTREACHED();
   }
   return window_id;
 }