Change trusted shared memory interface to match audio....

ppapi/proxy/ppb_image_data_proxy.h

 // Copyright (c) 2010 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 PPAPI_PPB_IMAGE_DATA_PROXY_H_
 #define PPAPI_PPB_IMAGE_DATA_PROXY_H_
 
 #include "ppapi/c/pp_bool.h"
 #include "ppapi/c/pp_completion_callback.h"
 #include "ppapi/c/pp_module.h"
@@ skipping 24 matching lines @@
  private:
   // Message handlers.
   void OnMsgGetNativeImageDataFormat(int32* result);
   void OnMsgIsImageDataFormatSupported(int32 format, PP_Bool* result);
   void OnMsgCreate(PP_Module module,
                    int32_t format,
                    const PP_Size& size,
                    PP_Bool init_to_zero,
                    PP_Resource* result,
                    std::string* image_data_desc,
-                   uint64_t* result_shm_handle);
+                   int* result_shm_handle);
 };
 
 }  // namespace proxy
 }  // namespace pp
 
 #endif  // PPAPI_PPB_IMAGE_DATA_PROXY_H_