Use a direct include of the message_loop header in content/, part 3.

content/child/webblobregistry_impl.cc

 // Copyright 2013 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/child/webblobregistry_impl.h"
 
 #include "base/files/file_path.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/shared_memory.h"
-#include "base/message_loop.h"
+#include "base/message_loop/message_loop.h"
 #include "content/child/child_thread.h"
 #include "content/child/thread_safe_sender.h"
 #include "content/common/fileapi/webblob_messages.h"
 #include "third_party/WebKit/public/platform/WebBlobData.h"
 #include "third_party/WebKit/public/platform/WebString.h"
 #include "third_party/WebKit/public/platform/WebThreadSafeData.h"
 #include "third_party/WebKit/public/platform/WebURL.h"
 #include "webkit/common/blob/blob_data.h"
 
 using WebKit::WebBlobData;
@@ skipping 105 matching lines @@
   sender_->Send(new BlobHostMsg_CloneBlob(url, src_url));
 }
 
 void WebBlobRegistryImpl::unregisterBlobURL(const WebURL& url) {
   DCHECK(ChildThread::current()->message_loop() ==
          base::MessageLoop::current());
   sender_->Send(new BlobHostMsg_RemoveBlob(url));
 }
 
 }  // namespace content