iwyu: Cleanup in the following files:

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/memory/scoped_vector.h"
 #include "base/time.h"
-#include "chrome/browser/autofill/autofill_profile.h"
-#include "chrome/browser/autofill/field_types.h"
-#include "chrome/browser/autofill/form_structure.h"
 #include "chrome/common/net/url_fetcher.h"
 
 class AutofillMetrics;
+class FormStructure;
+class GURL;
 class Profile;
 
+namespace net {
+class URLRequestStatus;
+}
+
 // Handles getting and updating Autofill heuristics.
 class AutofillDownloadManager : public URLFetcher::Delegate {
  public:
   enum AutofillRequestType {
     REQUEST_QUERY,
     REQUEST_UPLOAD,
   };
 
   // An interface used to notify clients of AutofillDownloadManager.
   // Notifications are *not* guaranteed to be called.
@@ skipping 125 matching lines @@
   // |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_