PPAPI: Don't use MessageLoop::current in the plugin process

ppapi/proxy/ppb_var_deprecated_proxy.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 "ppapi/proxy/ppb_var_deprecated_proxy.h"
 
 #include <stdlib.h>  // For malloc
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
 #include "ppapi/c/dev/ppb_var_deprecated.h"
 #include "ppapi/c/pp_var.h"
 #include "ppapi/c/ppb_core.h"
 #include "ppapi/c/ppb_var.h"
 #include "ppapi/proxy/host_dispatcher.h"
 #include "ppapi/proxy/plugin_dispatcher.h"
 #include "ppapi/proxy/plugin_globals.h"
 #include "ppapi/proxy/plugin_resource_tracker.h"
 #include "ppapi/proxy/plugin_var_tracker.h"
 #include "ppapi/proxy/ppapi_messages.h"
 #include "ppapi/proxy/ppp_class_proxy.h"
 #include "ppapi/proxy/proxy_object_var.h"
 #include "ppapi/proxy/serialized_var.h"
+#include "ppapi/shared_impl/ppapi_globals.h"
 #include "ppapi/shared_impl/ppb_var_shared.h"
 #include "ppapi/shared_impl/proxy_lock.h"
 #include "ppapi/shared_impl/var.h"
 
 namespace ppapi {
 namespace proxy {
 
 namespace {
 
 // Used to do get the set-up information for calling a var object. If the
@@ skipping 337 matching lines @@
   // returned (see ipc_sync_channel.cc). In this case, that means it could
   // release the object before it is AddRef'ed on the browser side.
   // To work around this, we post a task here, that will not execute before
   // control goes back to the main message loop, that will ensure the sync send
   // has returned and the browser side can take its reference before we Release.
   // Note: if the instance is gone by the time the task is executed, then it
   // will Release the objects itself and this Release will be a NOOP (aside of a
   // spurious warning).
   // TODO(piman): See if we can fix the IPC code to enforce strict ordering, and
   // then remove this.
-  base::MessageLoop::current()->PostNonNestableTask(
+  PpapiGlobals::Get()->GetMainThreadMessageLoop()->PostNonNestableTask(
       FROM_HERE,
       RunWhileLocked(base::Bind(&PPB_Var_Deprecated_Proxy::DoReleaseObject,
                                 task_factory_.GetWeakPtr(),
                                 object_id)));
 }
 
 void PPB_Var_Deprecated_Proxy::OnMsgHasProperty(
     SerializedVarReceiveInput var,
     SerializedVarReceiveInput name,
     SerializedVarOutParam exception,
@@ skipping 123 matching lines @@
 }
 
 void PPB_Var_Deprecated_Proxy::DoReleaseObject(int64 object_id) {
   PP_Var var = { PP_VARTYPE_OBJECT };
   var.value.as_id = object_id;
   ppb_var_impl_->Release(var);
 }
 
 }  // namespace proxy
 }  // namespace ppapi