Add JPEG decoder for VAAPI JPEG decode acceleration

ppapi/api/dev/pp_video_dev.idl

 /* 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.
  */
 
 /**
  * NOTE: these must be kept in sync with the versions in media/!
  */
 
 
@@ skipping 13 matching lines @@
   PP_VIDEODECODER_H264PROFILE_MAIN = 2,
   PP_VIDEODECODER_H264PROFILE_EXTENDED = 3,
   PP_VIDEODECODER_H264PROFILE_HIGH = 4,
   PP_VIDEODECODER_H264PROFILE_HIGH10PROFILE = 5,
   PP_VIDEODECODER_H264PROFILE_HIGH422PROFILE = 6,
   PP_VIDEODECODER_H264PROFILE_HIGH444PREDICTIVEPROFILE = 7,
   PP_VIDEODECODER_H264PROFILE_SCALABLEBASELINE = 8,
   PP_VIDEODECODER_H264PROFILE_SCALABLEHIGH = 9,
   PP_VIDEODECODER_H264PROFILE_STEREOHIGH = 10,
   PP_VIDEODECODER_H264PROFILE_MULTIVIEWHIGH = 11,
-  PP_VIDEODECODER_VP8PROFILE_ANY = 12
+  PP_VIDEODECODER_VP8PROFILE_ANY = 12,
+  PP_VIDEODECODER_MJPEGPROFILE = 13
 };
 
 /**
  * The data structure for video bitstream buffer.
  */
 [assert_size(12)]
 struct PP_VideoBitstreamBuffer_Dev {
   /**
    * Client-specified identifier for the bitstream buffer. Valid values are
    * non-negative.
@@ skipping 72 matching lines @@
    */
   PP_VIDEODECODERERROR_UNREADABLE_INPUT = 3,
 
   /** 
    * A failure occurred at the browser layer or lower.  Examples of such
    * failures include GPU hardware failures, GPU driver failures, GPU library
    * failures, browser programming errors, and so on.
    */
   PP_VIDEODECODERERROR_PLATFORM_FAILURE = 4
 };