Use ThreadSafeSender in a couple of places.

content/worker/worker_webkitplatformsupport_impl.h

 // 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.
 
 #ifndef CONTENT_WORKER_WORKER_WEBKITPLATFORMSUPPORT_IMPL_H_
 #define CONTENT_WORKER_WORKER_WEBKITPLATFORMSUPPORT_IMPL_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "content/common/webkitplatformsupport_impl.h"
 #include "third_party/WebKit/Source/Platform/chromium/public/WebMimeRegistry.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebIDBFactory.h"
 
 namespace WebKit {
 class WebFileUtilities;
 }
 
 namespace content {
+class ThreadSafeSender;
 class WebFileSystemImpl;
 
 class WorkerWebKitPlatformSupportImpl : public WebKitPlatformSupportImpl,
                                         public WebKit::WebMimeRegistry {
  public:
   WorkerWebKitPlatformSupportImpl();
   virtual ~WorkerWebKitPlatformSupportImpl();
 
   // WebKitPlatformSupport methods:
   virtual WebKit::WebClipboard* clipboard();
@@ skipping 56 matching lines @@
   virtual WebKit::WebString wellKnownMimeTypeForExtension(
       const WebKit::WebString&);
   virtual WebKit::WebString mimeTypeFromFile(const WebKit::WebString&);
   virtual WebKit::WebString preferredExtensionForMIMEType(
       const WebKit::WebString&);
 
  private:
 
   class FileUtilities;
   scoped_ptr<FileUtilities> file_utilities_;
-
   scoped_ptr<WebKit::WebBlobRegistry> blob_registry_;
-
   scoped_ptr<WebFileSystemImpl> web_file_system_;
   scoped_ptr<WebKit::WebIDBFactory> web_idb_factory_;
+  scoped_refptr<ThreadSafeSender> thread_safe_sender_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_WORKER_WORKER_WEBKITPLATFORMSUPPORT_IMPL_H_