Fix ProcessSingletonTest.StartupRaceCondition for win.

content/browser/browser_main_loop.cc

 // Copyright (c) 2011 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 "content/browser/browser_main_loop.h"
 
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
 #include "base/logging.h"
 #include "base/message_loop.h"
@@ skipping 140 matching lines @@
 BrowserMainLoop::BrowserMainLoop(const content::MainFunctionParams& parameters)
     : parameters_(parameters),
       parsed_command_line_(parameters.command_line),
       result_code_(content::RESULT_CODE_NORMAL_EXIT) {
 #if defined(OS_WIN)
   OleInitialize(NULL);
 #endif
 }
 
 BrowserMainLoop::~BrowserMainLoop() {
+  // Release/destroy parts here, before OleUninitialize() and before other
+  // members are destroyed (in particular main_message_loop_).
+  parts_.reset();
+
 #if defined(OS_WIN)
   OleUninitialize();
 #endif
 }
 
 void BrowserMainLoop::Init() {
   parts_.reset(
       GetContentClient()->browser()->CreateBrowserMainParts(parameters_));
 }
 
@@ skipping 169 matching lines @@
     MessageLoopForUI::current()->PostTask(FROM_HERE, parameters_.ui_task);
 
 #if defined(OS_MACOSX)
   MessageLoopForUI::current()->Run();
 #else
   MessageLoopForUI::current()->RunWithDispatcher(NULL);
 #endif
 }
 
 }  // namespace content