Cleanup: Remove unneeded forward declarations in webkit/.

webkit/fileapi/file_system_test_helper.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 WEBKIT_FILEAPI_FILE_SYSTEM_TEST_HELPER_H_
 #define WEBKIT_FILEAPI_FILE_SYSTEM_TEST_HELPER_H_
 #pragma once
 
 #include <string>
 
@@ skipping 11 matching lines @@
 
 class FilePath;
 
 namespace fileapi {
 
 class FileSystemCallbackDispatcher;
 class FileSystemContext;
 class FileSystemFileUtil;
 class FileSystemOperation;
 class FileSystemOperationContext;
-class FileSystemPathManager;
 
 // Filesystem test helper class that encapsulates test environment for
 // a given {origin, type} pair.
 class FileSystemTestOriginHelper {
  public:
   FileSystemTestOriginHelper(const GURL& origin, FileSystemType type);
   FileSystemTestOriginHelper();
   ~FileSystemTestOriginHelper();
 
   void SetUp(const FilePath& base_dir, FileSystemFileUtil* file_util);
@@ skipping 43 matching lines @@
   scoped_refptr<FileSystemContext> file_system_context_;
   const GURL origin_;
   const FileSystemType type_;
   FileSystemFileUtil* file_util_;
   int64 initial_usage_size_;
 };
 
 }  // namespace fileapi
 
 #endif  // WEBKIT_FILEAPI_FILE_SYSTEM_TEST_HELPER_H_