Add test-25fps.vp9 test video.

media/test/data/README

 // Copyright (c) 2011 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.
 
 bear-320x240.webm - WebM encode of bear.1280x720.mp4 resized to 320x240.
 bear-320x240-video-only.webm - The video track of bear-320x240.webm.
 bear-320x240-audio-only.webm - The audio track of bear-320x240.webm.
 bear-vp9.webm - VP9 video only WebM file.
 bear-vp9-opus.webm - VP9 Video with Opus Audio.
 bear-vp8-webvtt.webm - WebM VP8 video with WebVTT subtitle track.
@@ skipping 94 matching lines @@
 test-25fps.vp8:
   ffmpeg git-2012-07-19-a8d8e86, libvpx ToT 7/19, chromium r147247,
   mkvextract v5.0.1
   ffmpeg -i test-25fps.h264 -vcodec libvpx -an test-25fps.webm && \
       mkvextract tracks test-25fps.webm 1:test-25fps.vp8 && rm test-25fps.webm
 
 test-25fps.vp8.md5:
   MD5 of RGB thumbnail rendered version of test-25fps.vp8 decoded with V4L2VDA
   on Exynos. Written out by video_decode_accelerator_unittest.
 
+test-25fps.vp9:
+  avconv 9.16-6:9.16-0ubuntu0.14.04.1, vpxenc v1.3.0
+  avconv -i test-25fps.h264 -c:v rawvideo -pix_fmt yuv420p test-25fps_i420.yuv
+  vpxenc test-25fps_i420.yuv -o test-25fps.vp9 --codec=vp9 -w 320 -h 240 --ivf \
+      --profile=0 --kf-min-dist=0 --kf-max-dist=150 --lag-in-frames=24 \
+      --drop-frame=0 --target-bitrate=140 --cq-level=23 --min-q=4 --max-q=56 \
+      --static-thresh=1000 --arnr-maxframes=7 --arnr-strength=5 --arnr-type=3 \
+      --cpu-used=1 --good --tile-columns=1 --passes=2 --threads=1 --fps=25/1 \
+      --end-usage=cq --auto-alt-ref=1 --bias-pct=50 --minsection-pct=0 \
+      --maxsection-pct=2000 --undershoot-pct=100
+
+test-25fps.vp9.md5:
+  MD5 of RGB thumbnail rendered version of test-25fps.vp9. Written out by
+  video_decode_accelerator_unittest.
+
 // VDA test files: bear
 bear.h264:
   Using ffmpeg version 0.8.6-4:0.8.6-0ubuntu0.12.04.1, generated with
   bear.mp4 (https://chromiumcodereview.appspot.com/10805089):
   ffmpeg -i bear.mp4 -vcodec copy -vbsf h264_mp4toannexb \
       -an bear.h264
 
 bear.h264.md5:
   MD5s of RGB thumbnail rendered version of bear.h264 decoded with Intel
   VAAPI on Ivy Bridge and Sandy Bridge and V4L2VDA on Exynos.
@@ skipping 33 matching lines @@
   precision varies.
 
 // VEA test files:
 bear_320x192_40frames.yuv
   First 40 raw i420 frames of bear-1280x720.mp4 scaled down to 320x192 for
   video_encode_accelerator_unittest.
 
 // JPEG test files:
 pixel-1280x720.jpg - single MJEPG encoded frame of 1280x720, captured on
  Chromebook Pixel.