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

webkit/plugins/ppapi/plugin_module.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 "webkit/plugins/ppapi/plugin_module.h"
 
 #include <set>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 408 matching lines @@
       path_(path),
       permissions_(perms),
       reserve_instance_id_(NULL),
       nacl_ipc_proxy_(false) {
   // Ensure the globals object is created.
   if (!host_globals)
     host_globals = new HostGlobals;
 
   memset(&entry_points_, 0, sizeof(entry_points_));
   pp_module_ = HostGlobals::Get()->AddModule(this);
-  // Initialize the main thread message loop.
-  PpapiGlobals::Get()->GetMainThreadMessageLoop();
   GetLivePluginSet()->insert(this);
 }
 
 PluginModule::~PluginModule() {
   // In the past there have been crashes reentering the plugin module
   // destructor. Catch if that happens again earlier.
   CHECK(!is_in_destructor_);
   is_in_destructor_ = true;
 
   // When the module is being deleted, there should be no more instances still
@@ skipping 175 matching lines @@
   int retval = entry_points.initialize_module(pp_module(), &GetInterface);
   if (retval != 0) {
     LOG(WARNING) << "PPP_InitializeModule returned failure " << retval;
     return false;
   }
   return true;
 }
 
 }  // namespace ppapi
 }  // namespace webkit