storage: Cleanup class/struct forward declarations

storage/browser/fileapi/file_system_context.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 STORAGE_BROWSER_FILEAPI_FILE_SYSTEM_CONTEXT_H_
 #define STORAGE_BROWSER_FILEAPI_FILE_SYSTEM_CONTEXT_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 14 matching lines @@
 #include "storage/browser/fileapi/task_runner_bound_observer_list.h"
 #include "storage/browser/storage_browser_export.h"
 #include "storage/common/fileapi/file_system_types.h"
 
 namespace base {
 class FilePath;
 class SequencedTaskRunner;
 class SingleThreadTaskRunner;
 }
 
-namespace chrome {
-class NativeMediaFileUtilTest;
-}
-
 namespace storage {
 class QuotaManagerProxy;
 class SpecialStoragePolicy;
 }
 
 namespace net {
 class URLRequest;
 }
 
 namespace storage {
-class BlobURLRequestJobTest;
 class FileStreamReader;
 }
 
 namespace storage {
 
 class AsyncFileUtil;
 class CopyOrMoveFileValidatorFactory;
 class ExternalFileSystemBackend;
 class ExternalMountPoints;
 class FileStreamWriter;
 class FileSystemBackend;
-class FileSystemFileUtil;
 class FileSystemOperation;
 class FileSystemOperationRunner;
 class FileSystemOptions;
 class FileSystemQuotaUtil;
 class FileSystemURL;
 class IsolatedFileSystemBackend;
 class MountPoints;
 class QuotaReservation;
 class SandboxFileSystemBackend;
-class WatchManager;
 
 struct DefaultContextDeleter;
 struct FileSystemInfo;
 
 // An auto mount handler will attempt to mount the file system requested in
 // |url_request|. If the URL is for this auto mount handler, it returns true
 // and calls |callback| when the attempt is complete. If the auto mounter
 // does not recognize the URL, it returns false and does not call |callback|.
 // Called on the IO thread.
 typedef base::Callback<bool(
@@ skipping 338 matching lines @@
 
 struct DefaultContextDeleter {
   static void Destruct(const FileSystemContext* context) {
     context->DeleteOnCorrectThread();
   }
 };
 
 }  // namespace storage
 
 #endif  // STORAGE_BROWSER_FILEAPI_FILE_SYSTEM_CONTEXT_H_