Remove remaining calls to deprecated MessageLoop methods on Mac.

ppapi/proxy/ppb_message_loop_proxy.h

 // 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.
 
 #ifndef PPAPI_PROXY_PPB_MESSAGE_LOOP_PROXY_H_
 #define PPAPI_PROXY_PPB_MESSAGE_LOOP_PROXY_H_
 
 #include <stdint.h>
 
 #include <memory>
 
 #include "base/bind.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/message_loop/message_loop.h"
+#include "base/run_loop.h"
 #include "base/single_thread_task_runner.h"
 #include "ppapi/proxy/interface_proxy.h"
 #include "ppapi/proxy/ppapi_proxy_export.h"
 #include "ppapi/shared_impl/ppb_message_loop_shared.h"
 #include "ppapi/thunk/ppb_message_loop_api.h"
 
 struct PPB_MessageLoop_1_0;
 
 namespace ppapi {
 namespace proxy {
@@ skipping 55 matching lines @@
   // TLS destructor function.
   static void ReleaseMessageLoop(void* value);
 
   // Created when we attach to the current thread, since MessageLoop assumes
   // that it's created on the thread it will run on. NULL for the main thread
   // loop, since that's owned by somebody else. This is needed for Run and Quit.
   // Any time we post tasks, we should post them using task_runner_.
   std::unique_ptr<base::MessageLoop> loop_;
   scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
 
+  // RunLoop currently on the stack.
+  base::RunLoop* run_loop_ = nullptr;
+
   // Number of invocations of Run currently on the stack.
   int nested_invocations_;
 
   // Set to true when the message loop is destroyed to prevent forther
   // posting of work.
   bool destroyed_;
 
   // Set to true if all message loop invocations should exit and that the
   // loop should be destroyed once it reaches the outermost Run invocation.
   bool should_destroy_;
@@ skipping 18 matching lines @@
   static const PPB_MessageLoop_1_0* GetInterface();
 
  private:
   DISALLOW_COPY_AND_ASSIGN(PPB_MessageLoop_Proxy);
 };
 
 }  // namespace proxy
 }  // namespace ppapi
 
 #endif  // PPAPI_PROXY_PPB_MESSAGE_LOOP_PROXY_H_