components: Cleanup class/struct fwd declarations

components/nacl/renderer/file_downloader.h

 // Copyright 2014 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 <stdint.h>
 
 #include <string>
 
 #include "base/callback.h"
 #include "base/files/file.h"
 #include "components/nacl/renderer/ppb_nacl_private.h"
 #include "third_party/WebKit/public/web/WebAssociatedURLLoaderClient.h"
 
 namespace blink {
 class WebAssociatedURLLoader;
 struct WebURLError;
-class WebURLLoader;
 class WebURLResponse;
 }
 
 namespace nacl {
 
 // Downloads a file and writes the contents to a specified file open for
 // writing.
 class FileDownloader : public blink::WebAssociatedURLLoaderClient {
  public:
   enum Status {
@@ skipping 29 matching lines @@
   base::File file_;
   StatusCallback status_cb_;
   ProgressCallback progress_cb_;
   int http_status_code_;
   int64_t total_bytes_received_;
   int64_t total_bytes_to_be_received_;
   Status status_;
 };
 
 }  // namespace nacl