[PPAPI] API thunk for video media stream track.

ppapi/api/ppb_video_frame.idl

 /* 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.
  */
 
 /**
  * Defines the <code>PPB_VideoFrame</code> interface.
  */
+
+[generate_thunk]
+
 label Chrome {
   [channel=dev] M34 = 0.1
 };
 
 enum PP_VideoFrame_Format {
   /**
    * Unknown format value.
    */
   PP_VIDEOFRAME_FORMAT_UNKNOWN = 0,
 
@@ skipping 36 matching lines @@
 
   /**
    * Gets the timestamp of the video frame.
    *
    * @param[in] frame A <code>PP_Resource</code> corresponding to a video frame
    * resource.
    *
    * @return A <code>PP_TimeDelta</code> containing the timestamp of the video
    * frame. Given in seconds since the start of the containing video stream.
    */
+  [on_failure=0.0]
   PP_TimeDelta GetTimestamp([in] PP_Resource frame);
 
   /**
    * Sets the timestamp of the video frame. Given in seconds since the
    * start of the containing video stream.
    *
    * @param[in] frame A <code>PP_Resource</code> corresponding to a video frame
    * resource.
    * @param[in] timestamp A <code>PP_TimeDelta</code> containing the timestamp
    * of the video frame. Given in seconds since the start of the containing
    * video stream.
    */
   void SetTimestamp([in] PP_Resource frame, [in] PP_TimeDelta timestamp);
 
   /**
    * Gets the format of the video frame.
    *
    * @param[in] frame A <code>PP_Resource</code> corresponding to a video frame
    * resource.
    *
    * @return A <code>PP_VideoFrame_Format</code> containing the format of the
    * video frame.
    */
+  [on_failure=PP_VIDEOFRAME_FORMAT_UNKNOWN]
   PP_VideoFrame_Format GetFormat([in] PP_Resource frame);
 
   /**
    * Gets the size of the video frame.
    *
    * @param[in] frame A <code>PP_Resource</code> corresponding to a video frame
    * resource.
    * @param[out] size A <code>PP_Size</code>.
    *
    * @return A <code>PP_Bool</code> with <code>PP_TRUE</code> on success or
@@ skipping 14 matching lines @@
   /**
    * Gets the size of data buffer.
    *
    * @param[in] frame A <code>PP_Resource</code> corresponding to a video frame
    * resource.
    *
    * @return The size of the data buffer.
    */
   uint32_t GetDataBufferSize([in] PP_Resource frame);
 };