Use a direct include of the message_loop header in webkit/, part 1.

webkit/browser/appcache/appcache_service_unittest.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 <string>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
-#include "base/message_loop.h"
+#include "base/message_loop/message_loop.h"
 #include "base/pickle.h"
 #include "net/base/completion_callback.h"
 #include "net/base/io_buffer.h"
 #include "net/http/http_response_headers.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "webkit/browser/appcache/appcache_response.h"
 #include "webkit/browser/appcache/appcache_service.h"
 #include "webkit/browser/appcache/mock_appcache_storage.h"
 
 
@@ skipping 291 matching lines @@
   base::MessageLoop::current()->RunUntilIdle();
   EXPECT_EQ(0, CountPendingHelpers());
   EXPECT_FALSE(IsGroupStored(kManifestUrl));
   ResetStorage();
 
   service_.reset();  // Clean up.
   base::MessageLoop::current()->RunUntilIdle();
 }
 
 }  // namespace appcache