PPAPI: Get TrackedCallback ready for running on non-main threads.

webkit/plugins/ppapi/ppb_graphics_2d_impl.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_PLUGINS_PPAPI_PPB_GRAPHICS_2D_IMPL_H_
 #define WEBKIT_PLUGINS_PPAPI_PPB_GRAPHICS_2D_IMPL_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 99 matching lines @@
 
     void Set(scoped_refptr< ::ppapi::TrackedCallback> callback) {
       callback_ = callback;
     }
 
     void Clear() {
       callback_ = NULL;
     }
 
     void Execute(int32_t result) {
-      ::ppapi::TrackedCallback::ClearAndRun(&callback_, result);
+      callback_->Run(result);
     }
 
     void PostAbort() {
       if (!is_null()) {
         callback_->PostAbort();
         Clear();
       }
     }
 
    private:
@@ skipping 75 matching lines @@
 
   base::WeakPtrFactory<PPB_Graphics2D_Impl> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PPB_Graphics2D_Impl);
 };
 
 }  // namespace ppapi
 }  // namespace webkit
 
 #endif  // WEBKIT_PLUGINS_PPAPI_PPB_GRAPHICS_2D_IMPL_H_