Switch to standard integer types in ppapi/.

ppapi/shared_impl/media_stream_video_track_shared.h

 // Copyright 2014 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_SHARED_IMPL_MEDIA_STREAM_VIDEO_TRACK_SHARED_H_
 #define PPAPI_SHARED_IMPL_MEDIA_STREAM_VIDEO_TRACK_SHARED_H_
 
+#include <stdint.h>
+
 #include "ppapi/c/ppb_video_frame.h"
 #include "ppapi/shared_impl/ppapi_shared_export.h"
 
 namespace ppapi {
 
 class PPAPI_SHARED_EXPORT MediaStreamVideoTrackShared {
  public:
   struct Attributes {
     Attributes()
         : buffers(0),
           width(0),
           height(0),
           format(PP_VIDEOFRAME_FORMAT_UNKNOWN) {}
     int32_t buffers;
     int32_t width;
     int32_t height;
     PP_VideoFrame_Format format;
   };
 
   static bool VerifyAttributes(const Attributes& attributes);
 };
 
 }  // namespace ppapi
 
 #endif  // PPAPI_SHARED_IMPL_MEDIA_STREAM_VIDEO_TRACK_SHARED_H_