Update page action manifest parsing to match the new format.

chrome/browser/extensions/extension_process_manager.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_process_manager.h"
 
 #include "chrome/browser/browsing_instance.h"
 #include "chrome/browser/extensions/extension_host.h"
 #include "chrome/browser/extensions/extensions_service.h"
 #include "chrome/browser/profile.h"
@@ skipping 112 matching lines @@
   // Extension ids should get removed from the map before the process ids get
   // reused from a dead renderer.
   DCHECK(it == process_ids_.end());
   process_ids_[extension_id] = process_id;
 
   ExtensionsService* extension_service =
       browsing_instance_->profile()->GetExtensionsService();
 
   std::vector<std::string> page_action_ids;
   Extension* extension = extension_service->GetExtensionById(extension_id);
-  for (ExtensionActionMap::const_iterator i =
-           extension->page_actions().begin();
-       i != extension->page_actions().end(); ++i) {
-    page_action_ids.push_back(i->first);
-  }
+  if (extension->page_action())
+    page_action_ids.push_back(extension->page_action()->id());
 
   RenderProcessHost* rph = RenderProcessHost::FromID(process_id);
   rph->Send(new ViewMsg_Extension_UpdatePageActions(extension_id,
                                                     page_action_ids));
 
   // Send l10n messages to the renderer - if there are any.
   if (extension->message_bundle()) {
     rph->Send(new ViewMsg_Extension_SetL10nMessages(
         extension_id, *extension->message_bundle()->dictionary()));
   }
@@ skipping 79 matching lines @@
 void ExtensionProcessManager::OnExtensionHostCreated(ExtensionHost* host,
                                                      bool is_background) {
   all_hosts_.insert(host);
   if (is_background)
     background_hosts_.insert(host);
   NotificationService::current()->Notify(
       NotificationType::EXTENSION_HOST_CREATED,
       Source<ExtensionProcessManager>(this),
       Details<ExtensionHost>(host));
 }