Fix dependency: make file_system_util not depend on FileSystemURL

webkit/fileapi/file_system_util.h

 // Copyright (c) 2012 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_UTIL_H_
 #define WEBKIT_FILEAPI_FILE_SYSTEM_UTIL_H_
 
 #include <string>
 #include <vector>
 
 #include "base/files/file_path.h"
 #include "base/platform_file.h"
 #include "third_party/WebKit/Source/Platform/chromium/public/WebFileSystemType.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebFileError.h"
 #include "webkit/fileapi/file_system_types.h"
 #include "webkit/quota/quota_types.h"
 #include "webkit/storage/webkit_storage_export.h"
 
 class GURL;
 
 namespace fileapi {
 
-class FileSystemURL;
-
 extern const char kPersistentDir[];
 extern const char kTemporaryDir[];
 extern const char kExternalDir[];
 extern const char kIsolatedDir[];
 extern const char kTestDir[];
 
 class WEBKIT_STORAGE_EXPORT VirtualPath {
  public:
   static const base::FilePath::CharType kRoot[];
   static const base::FilePath::CharType kSeparator;
@@ skipping 103 matching lines @@
     std::string* filesystem_id);
 
 // Returns the root URI for an isolated filesystem for origin |origin_url|
 // and |filesystem_id|. If the |optional_root_name| is given the resulting
 // root URI will point to the subfolder within the isolated filesystem.
 WEBKIT_STORAGE_EXPORT std::string GetIsolatedFileSystemRootURIString(
     const GURL& origin_url,
     const std::string& filesystem_id,
     const std::string& optional_root_name);
 
-// Returns true if |url1| and |url2| belong to the same filesystem
-// (i.e. url1.origin() == url2.origin() && url1.type() == url2.type())
-WEBKIT_STORAGE_EXPORT bool AreSameFileSystem(
-    const FileSystemURL& url1,
-    const FileSystemURL& url2);
-
 }  // namespace fileapi
 
 #endif  // WEBKIT_FILEAPI_FILE_SYSTEM_UTIL_H_