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

chrome/browser/bookmarks/bookmark_html_writer.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_BOOKMARKS_BOOKMARK_HTML_WRITER_H_
 #define CHROME_BROWSER_BOOKMARKS_BOOKMARK_HTML_WRITER_H_
 #pragma once
 
 #include <list>
 #include <map>
 #include <string>
 
 #include "base/memory/ref_counted.h"
 #include "chrome/browser/history/history.h"
 #include "content/public/browser/notification_registrar.h"
 #include "net/base/file_stream.h"
 
 class BookmarkNode;
 class FilePath;
-class GURL;
 class Profile;
 
 // Observer for bookmark html output. Used only in tests.
 class BookmarksExportObserver {
  public:
   // Is invoked on the IO thread.
   virtual void OnExportFinished() = 0;
 
  protected:
   virtual ~BookmarksExportObserver() {}
@@ skipping 67 matching lines @@
 // thread is used.
 // Before writing to the file favicons are fetched on the main thread.
 // TODO(sky): need a callback on failure.
 void WriteBookmarks(Profile* profile,
                     const FilePath& path,
                     BookmarksExportObserver* observer);
 
 }  // namespace bookmark_html_writer
 
 #endif  // CHROME_BROWSER_BOOKMARKS_BOOKMARK_HTML_WRITER_H_