PPAPI: Make blocking completion callbacks work.

webkit/plugins/ppapi/file_callbacks.h

-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// 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_PLUGINS_PPAPI_FILE_CALLBACKS_H_
 #define WEBKIT_PLUGINS_PPAPI_FILE_CALLBACKS_H_
 
 #include <string>
 #include <vector>
 
 #include "base/memory/ref_counted.h"
@@ skipping 17 matching lines @@
 namespace webkit {
 namespace ppapi {
 
 class PPB_DirectoryReader_Impl;
 class PPB_FileSystem_Impl;
 
 // Instances of this class are deleted by FileSystemDispatcher.
 class FileCallbacks : public fileapi::FileSystemCallbackDispatcher {
  public:
   FileCallbacks(::ppapi::Resource* resource,
-                PP_CompletionCallback callback,
+                scoped_refptr< ::ppapi::TrackedCallback> callback,
                 PP_FileInfo* info,
                 scoped_refptr<PPB_FileSystem_Impl> file_system,
                 scoped_refptr<PPB_DirectoryReader_Impl> directory_reader);
   virtual ~FileCallbacks();
 
   // FileSystemCallbackDispatcher implementation.
   virtual void DidSucceed();
   virtual void DidReadMetadata(
       const base::PlatformFileInfo& file_info,
       const FilePath& unused);
@@ skipping 12 matching lines @@
   scoped_refptr< ::ppapi::TrackedCallback> callback_;
   PP_FileInfo* info_;
   scoped_refptr<PPB_FileSystem_Impl> file_system_;
   scoped_refptr<PPB_DirectoryReader_Impl> directory_reader_;
 };
 
 }  // namespace ppapi
 }  // namespace webkit
 
 #endif  // WEBKIT_PLUGINS_PPAPI_FILE_CALLBACKS_H_