Move page action manifest parsing out of Extension; the first multi-key manifest handler.

chrome/renderer/extensions/page_actions_custom_bindings.cc

 // Copyright (c) 2012 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/renderer/extensions/page_actions_custom_bindings.h"
 
 #include <string>
 
 #include "chrome/common/extensions/api/extension_action/action_info.h"
 #include "chrome/common/extensions/extension.h"
@@ skipping 14 matching lines @@
     const v8::Arguments& args) {
   PageActionsCustomBindings* self =
       GetFromArguments<PageActionsCustomBindings>(args);
   std::string extension_id = *v8::String::Utf8Value(args[0]->ToString());
   CHECK(!extension_id.empty());
   const Extension* extension =
       self->dispatcher_->extensions()->GetByID(extension_id);
   CHECK(extension);
 
   v8::Local<v8::Array> page_action_vector = v8::Array::New();
-  if (extension->page_action_info()) {
-    std::string id = extension->page_action_info()->id;
+  if (ActionInfo::GetPageActionInfo(extension)) {
+    std::string id = ActionInfo::GetPageActionInfo(extension)->id;
     page_action_vector->Set(v8::Integer::New(0),
                             v8::String::New(id.c_str(), id.size()));
   }
 
   return page_action_vector;
 }
 
 }  // extensions