Add RegisterMountPointProvider and TestMountPointProvider for testing

webkit/fileapi/file_system_operation.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_OPERATION_H_
 #define WEBKIT_FILEAPI_FILE_SYSTEM_OPERATION_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 103 matching lines @@
     FileSystemType type;
     base::Closure task;
     base::Closure error_callback;
   };
 
   // Only MountPointProviders or testing class can create a
   // new operation directly.
   friend class FileSystemTestHelper;
   friend class IsolatedMountPointProvider;
   friend class SandboxMountPointProvider;
+  friend class TestMountPointProvider;
   friend class chromeos::CrosMountPointProvider;
 
   friend class FileSystemOperationTest;
   friend class FileSystemOperationWriteTest;
   friend class FileWriterDelegateTest;
   friend class FileSystemTestOriginHelper;
   friend class FileSystemQuotaTest;
 
   FileSystemOperation(FileSystemContext* file_system_context);
 
@@ skipping 133 matching lines @@
 
   // A flag to make sure we call operation only once per instance.
   OperationType pending_operation_;
 
   DISALLOW_COPY_AND_ASSIGN(FileSystemOperation);
 };
 
 }  // namespace fileapi
 
 #endif  // WEBKIT_FILEAPI_FILE_SYSTEM_OPERATION_H_