remove remaining calls to old style MakeWeak

content/renderer/browser_plugin/browser_plugin.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 "content/renderer/browser_plugin/browser_plugin.h"
 
 #include "base/command_line.h"
 #include "base/json/json_string_value_serializer.h"
 #include "base/message_loop.h"
 #include "base/string_number_conversions.h"
@@ skipping 979 matching lines @@
 
   AliveV8PermissionRequestItem* new_item =
       new std::pair<int, base::WeakPtr<BrowserPlugin> >(
           id, weak_ptr_factory_.GetWeakPtr());
 
   std::pair<std::map<int, AliveV8PermissionRequestItem*>::iterator, bool>
       result = alive_v8_permission_request_objects_.insert(
           std::make_pair(id, new_item));
   CHECK(result.second);  // Inserted in the map.
   AliveV8PermissionRequestItem* request_item = result.first->second;
-  weak_request.MakeWeak(isolate, request_item, WeakCallbackForPersistObject);
+  weak_request.MakeWeak(
+      isolate, static_cast<void*>(request_item), WeakCallbackForPersistObject);
 }
 
 // static
 void BrowserPlugin::WeakCallbackForPersistObject(
-    v8::Isolate* isolate, v8::Persistent<v8::Value> object, void* param) {
-  v8::Persistent<v8::Object> persistent_object =
-      v8::Persistent<v8::Object>::Cast(object);
+    v8::Isolate* isolate, v8::Persistent<v8::Value>* object, void* param) {
 
   AliveV8PermissionRequestItem* item_ptr =
       static_cast<AliveV8PermissionRequestItem*>(param);
   int request_id = item_ptr->first;
   base::WeakPtr<BrowserPlugin> plugin = item_ptr->second;
   delete item_ptr;
 
-  persistent_object.Dispose(isolate);
-  persistent_object.Clear();
+  object->Dispose();
 
   if (plugin) {
     // Asynchronously remove item from |alive_v8_permission_request_objects_|.
     // Note that we are using weak pointer for the following PostTask, so we
     // don't need to worry about BrowserPlugin going away.
     base::MessageLoop::current()->PostTask(
         FROM_HERE,
         base::Bind(&BrowserPlugin::OnRequestObjectGarbageCollected,
                    plugin,
                    request_id));
@@ skipping 547 matching lines @@
     const WebKit::WebMouseEvent& event) {
   browser_plugin_manager()->Send(
       new BrowserPluginHostMsg_HandleInputEvent(render_view_routing_id_,
                                                 instance_id_,
                                                 plugin_rect_,
                                                 &event));
   return true;
 }
 
 }  // namespace content