Use a direct include of the message_loop header in content/, part 4.

content/renderer/browser_plugin/browser_plugin_bindings.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 "content/renderer/browser_plugin/browser_plugin_bindings.h"
 
 #include <cstdlib>
 #include <string>
 
 #include "base/bind.h"
-#include "base/message_loop.h"
+#include "base/message_loop/message_loop.h"
 #include "base/strings/string16.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_split.h"
 #include "base/strings/utf_string_conversions.h"
 #include "content/common/browser_plugin/browser_plugin_constants.h"
 #include "content/renderer/browser_plugin/browser_plugin.h"
 #include "third_party/WebKit/public/platform/WebString.h"
 #include "third_party/WebKit/public/web/WebBindings.h"
 #include "third_party/WebKit/public/web/WebDOMMessageEvent.h"
 #include "third_party/WebKit/public/web/WebDocument.h"
@@ skipping 754 matching lines @@
   for (PropertyBindingList::iterator iter = property_bindings_.begin();
        iter != property_bindings_.end();
        ++iter) {
     if ((*iter)->MatchesName(name))
       return (*iter)->GetProperty(this, result);
   }
   return false;
 }
 
 }  // namespace content