Update page action manifest parsing to match the new format.

chrome/browser/extensions/extension_page_actions_module.cc

 // Copyright (c) 2009 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_page_actions_module.h"
 
 #include "base/string_util.h"
 #include "chrome/browser/browser.h"
 #include "chrome/browser/browser_list.h"
 #include "chrome/browser/profile.h"
@@ skipping 53 matching lines @@
   // Find our extension.
   Extension* extension = NULL;
   ExtensionsService* service = profile()->GetExtensionsService();
   extension = service->GetExtensionById(extension_id());
   if (!extension) {
     error_ = ExtensionErrorUtils::FormatErrorMessage(keys::kNoExtensionError,
                                                      extension_id());
     return false;
   }
 
-  const ExtensionAction* page_action =
-      extension->GetExtensionAction(page_action_id,
-                                    ExtensionAction::PAGE_ACTION);
+  const ExtensionAction* page_action = extension->page_action();
   if (!page_action) {
     error_ = ExtensionErrorUtils::FormatErrorMessage(keys::kNoPageActionError,
                                                      page_action_id);
     return false;
   }
 
   // Set visibility and broadcast notifications that the UI should be updated.
   contents->SetPageActionEnabled(page_action, enable, title, icon_id);
   contents->NotifyNavigationStateChanged(TabContents::INVALIDATE_PAGE_ACTIONS);
 
   return true;
 }
 
 bool EnablePageActionFunction::RunImpl() {
   return SetPageActionEnabled(true);
 }
 
 bool DisablePageActionFunction::RunImpl() {
   return SetPageActionEnabled(false);
 }