Pepper: Add VP9 support to PPB_VideoDecoder API.

ppapi/api/pp_codecs.idl

 /* Copyright (c) 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.
  */
 
 /**
  * Video profiles.
  */
 enum PP_VideoProfile {
   PP_VIDEOPROFILE_H264BASELINE = 0,
   PP_VIDEOPROFILE_H264MAIN = 1,
   PP_VIDEOPROFILE_H264EXTENDED = 2,
   PP_VIDEOPROFILE_H264HIGH = 3,
   PP_VIDEOPROFILE_H264HIGH10PROFILE = 4,
   PP_VIDEOPROFILE_H264HIGH422PROFILE = 5,
   PP_VIDEOPROFILE_H264HIGH444PREDICTIVEPROFILE = 6,
   PP_VIDEOPROFILE_H264SCALABLEBASELINE = 7,
   PP_VIDEOPROFILE_H264SCALABLEHIGH = 8,
   PP_VIDEOPROFILE_H264STEREOHIGH = 9,
   PP_VIDEOPROFILE_H264MULTIVIEWHIGH = 10,
   PP_VIDEOPROFILE_VP8MAIN = 11,
-  PP_VIDEOPROFILE_MAX = PP_VIDEOPROFILE_VP8MAIN
+  PP_VIDEOPROFILE_VP9MAIN = 12,
+  PP_VIDEOPROFILE_MAX = PP_VIDEOPROFILE_VP9MAIN
 };
 
 /**
  * Struct describing a decoded video picture. The decoded picture data is stored
  * in the GL texture corresponding to |texture_id|. The plugin can determine
  * which Decode call generated the picture using |decode_id|.
  */
 struct PP_VideoPicture {
   /**
    * |decode_id| parameter of the Decode call which generated this picture.
    * See the PPB_VideoDecoder function Decode() for more details.
    */
   uint32_t decode_id;
 
   /**
    * Texture ID in the plugin's GL context. The plugin can use this to render
    * the decoded picture.
    */
   uint32_t texture_id;
 
   /**
    * The GL texture target for the decoded picture. Possible values are:
    *   GL_TEXTURE_2D                 (normalized texture coordinates)
    *   GL_TEXTURE_RECTANGLE_ARB      (dimension dependent texture coordinates)
    *
-   * The pixel format of the texture is GL_BGRA.
+   * The pixel format of the texture is GL_RGBA.
    */
   uint32_t texture_target;
 
   /**
    * Dimensions of the texture holding the decoded picture.
    */
   PP_Size texture_size;
 };