PPAPI: Make CompletionCallbacks work right on background threads.

ppapi/proxy/plugin_globals.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_PLUGIN_GLOBALS_H_
 #define PPAPI_PROXY_PLUGIN_GLOBALS_H_
 
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/synchronization/lock.h"
@@ skipping 38 matching lines @@
   virtual void PreCacheFontForFlash(const void* logfontw) OVERRIDE;
   virtual base::Lock* GetProxyLock() OVERRIDE;
   virtual void LogWithSource(PP_Instance instance,
                              PP_LogLevel_Dev level,
                              const std::string& source,
                              const std::string& value) OVERRIDE;
   virtual void BroadcastLogWithSource(PP_Module module,
                                       PP_LogLevel_Dev level,
                                       const std::string& source,
                                       const std::string& value) OVERRIDE;
+  virtual MessageLoopShared* GetCurrentMessageLoop() OVERRIDE;
 
   // Getters for the plugin-specific versions.
   PluginResourceTracker* plugin_resource_tracker() {
     return &plugin_resource_tracker_;
   }
   PluginVarTracker* plugin_var_tracker() {
     return &plugin_var_tracker_;
   }
 
   // The embedder should call set_proxy_delegate during startup.
@@ skipping 55 matching lines @@
   // called.
   std::string command_line_;
 
   DISALLOW_COPY_AND_ASSIGN(PluginGlobals);
 };
 
 }  // namespace proxy
 }  // namespace ppapi
 
 #endif   // PPAPI_PROXY_PLUGIN_GLOBALS_H_