Use the new callback tracker and delete the old one

webkit/plugins/ppapi/ppb_file_chooser_impl.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_PLUGINS_PPAPI_PPB_FILE_CHOOSER_IMPL_H_
 #define WEBKIT_PLUGINS_PPAPI_PPB_FILE_CHOOSER_IMPL_H_
 
 #include <string>
 #include <vector>
 
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
 #include "ppapi/c/dev/ppb_file_chooser_dev.h"
 #include "ppapi/shared_impl/resource.h"
 #include "ppapi/thunk/ppb_file_chooser_api.h"
 #include "webkit/plugins/webkit_plugins_export.h"
 
 struct PP_CompletionCallback;
 
+namespace ppapi {
+class TrackedCallback;
+}
+
 namespace WebKit {
 class WebString;
 }
 
 namespace webkit {
 namespace ppapi {
 
 class PPB_FileRef_Impl;
-class TrackedCompletionCallback;
 
 class PPB_FileChooser_Impl : public ::ppapi::Resource,
                              public ::ppapi::thunk::PPB_FileChooser_API {
  public:
   PPB_FileChooser_Impl(PP_Instance instance,
                        PP_FileChooserMode_Dev mode,
                        const char* accept_mime_types);
   virtual ~PPB_FileChooser_Impl();
 
   static PP_Resource Create(PP_Instance instance,
@@ skipping 31 matching lines @@
 
   // Splits a comma-separated MIME type list |accept_mime_types|, trims the
   // resultant split types, makes them lowercase, and returns them.
   // Though this should be private, this is public for testing.
   WEBKIT_PLUGINS_EXPORT static std::vector<WebKit::WebString> ParseAcceptValue(
       const std::string& accept_mime_types);
 
  private:
   PP_FileChooserMode_Dev mode_;
   std::string accept_mime_types_;
-  scoped_refptr<TrackedCompletionCallback> callback_;
+  scoped_refptr< ::ppapi::TrackedCallback> callback_;
   std::vector< scoped_refptr<PPB_FileRef_Impl> > chosen_files_;
   size_t next_chosen_file_index_;
 };
 
 }  // namespace ppapi
 }  // namespace webkit
 
 #endif  // WEBKIT_PLUGINS_PPAPI_PPB_FILE_CHOOSER_IMPL_H_