Cleanup: Remove forward declarations in various chrome/browser directories.

chrome/browser/autofill/autofill_download.h

 // Copyright (c) 2011 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 CHROME_BROWSER_AUTOFILL_AUTOFILL_DOWNLOAD_H_
 #define CHROME_BROWSER_AUTOFILL_AUTOFILL_DOWNLOAD_H_
 #pragma once
 
 #include <stddef.h>
 #include <list>
 #include <map>
 #include <string>
 #include <utility>
 #include <vector>
 
 #include "base/compiler_specific.h"
 #include "base/gtest_prod_util.h"
 #include "base/time.h"
 #include "chrome/browser/autofill/autofill_type.h"
 #include "content/public/common/url_fetcher_delegate.h"
 
 class AutofillMetrics;
 class FormStructure;
-class GURL;
 class Profile;
 
-namespace net {
-class URLRequestStatus;
-}
-
 // Handles getting and updating Autofill heuristics.
 class AutofillDownloadManager : public content::URLFetcherDelegate {
  public:
   enum AutofillRequestType {
     REQUEST_QUERY,
     REQUEST_UPLOAD,
   };
 
   // An interface used to notify clients of AutofillDownloadManager.
   class Observer {
@@ skipping 111 matching lines @@
   // |positive_upload_rate_| is for matched forms,
   // |negative_upload_rate_| for non matched.
   double positive_upload_rate_;
   double negative_upload_rate_;
 
   // Needed for unit-test.
   int fetcher_id_for_unittest_;
 };
 
 #endif  // CHROME_BROWSER_AUTOFILL_AUTOFILL_DOWNLOAD_H_