content/child: Remove use of MessageLoopProxy and deprecated MessageLoop APIs

content/ppapi_plugin/ppapi_thread.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 CONTENT_PPAPI_PLUGIN_PPAPI_THREAD_H_
 #define CONTENT_PPAPI_PLUGIN_PPAPI_THREAD_H_
 
 #include <map>
 #include <string>
 
@@ skipping 56 matching lines @@
     LOAD_RESULT_MAX  // Boundary value for UMA_HISTOGRAM_ENUMERATION.
   };
 
   // ChildThread overrides.
   bool Send(IPC::Message* msg) override;
   bool OnControlMessageReceived(const IPC::Message& msg) override;
   void OnChannelConnected(int32 peer_pid) override;
 
   // PluginDispatcher::PluginDelegate implementation.
   std::set<PP_Instance>* GetGloballySeenInstanceIDSet() override;
-  base::MessageLoopProxy* GetIPCMessageLoop() override;
+  base::SingleThreadTaskRunner* GetIPCTaskRunner() override;
   base::WaitableEvent* GetShutdownEvent() override;
   IPC::PlatformFileForTransit ShareHandleWithRemote(
       base::PlatformFile handle,
       base::ProcessId peer_pid,
       bool should_close_source) override;
   uint32 Register(ppapi::proxy::PluginDispatcher* plugin_dispatcher) override;
   void Unregister(uint32 plugin_dispatcher_id) override;
 
   // PluginProxyDelegate.
   // SendToBrowser() is intended to be safe to use on another thread so
@@ skipping 76 matching lines @@
   DISALLOW_IMPLICIT_CONSTRUCTORS(PpapiThread);
 };
 
 #if defined(COMPILER_MSVC)
 #pragma warning(pop)
 #endif
 
 }  // namespace content
 
 #endif  // CONTENT_PPAPI_PLUGIN_PPAPI_THREAD_H_