Use a direct include of the message_loop header in net/, part 2.

net/http/mock_http_cache.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 "net/http/mock_http_cache.h"
 
 #include "base/bind.h"
-#include "base/message_loop.h"
+#include "base/message_loop/message_loop.h"
 #include "net/base/completion_callback.h"
 #include "net/base/net_errors.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace {
 
 // We can override the test mode for a given operation by setting this global
 // variable.
 int g_test_mode = 0;
 
@@ skipping 591 matching lines @@
 void MockBlockingBackendFactory::FinishCreation() {
   block_ = false;
   if (!callback_.is_null()) {
     if (!fail_)
       *backend_ = new MockDiskCache();
     net::CompletionCallback cb = callback_;
     callback_.Reset();
     cb.Run(Result());  // This object can be deleted here.
   }
 }