Fix unit test to allow repeated successful runs by avoiding a function static variable in tests.

ppapi/shared_impl/test_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_SHARED_IMPL_TEST_GLOBALS_H_
 #define PPAPI_SHARED_IMPL_TEST_GLOBALS_H_
 
 #include "base/compiler_specific.h"
 #include "ppapi/shared_impl/callback_tracker.h"
 #include "ppapi/shared_impl/ppapi_globals.h"
@@ skipping 24 matching lines @@
   // PpapiGlobals implementation.
   virtual ResourceTracker* GetResourceTracker() OVERRIDE;
   virtual VarTracker* GetVarTracker() OVERRIDE;
   virtual CallbackTracker* GetCallbackTrackerForInstance(
       PP_Instance instance) OVERRIDE;
   virtual thunk::PPB_Instance_API* GetInstanceAPI(
       PP_Instance instance) OVERRIDE;
   virtual thunk::ResourceCreationAPI* GetResourceCreationAPI(
       PP_Instance instance) OVERRIDE;
   virtual PP_Module GetModuleForInstance(PP_Instance instance) OVERRIDE;
+  virtual base::MessageLoopProxy* GetMainThreadMessageLoop() OVERRIDE;
   virtual std::string GetCmdLine() OVERRIDE;
   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;
 
  private:
   ResourceTracker resource_tracker_;
   TestVarTracker var_tracker_;
   scoped_refptr<CallbackTracker> callback_tracker_;
+  scoped_refptr<base::MessageLoopProxy> message_loop_proxy_;
 
   DISALLOW_COPY_AND_ASSIGN(TestGlobals);
 };
 
 }  // namespace ppapi
 
 #endif   // PPAPI_SHARED_IMPL_TEST_GLOBALS_H_