Roll src/third_party/libvpx/source/libvpx/ caa116c9b..401e6d48b (13 commits)

https://chromium.googlesource.com/webm/libvpx.git/+log/caa116c9be96..401e6d48bfd3

$ git log caa116c9b..401e6d48b --date=short --no-merges --format='%ad %ae %s'
2017-10-17 jianj Add datarate test for vp8 ROI.
2017-10-12 jianj vp8: Enable use of ROI map.
2017-10-14 kylesiefring Refactor x86/vpx_subpixel_8t_intrin_avx2.c
2017-09-13 yinshiyou-hf vp8: [loongson] optimize idct with mmi
2017-10-11 linfengz Add 4 to 3 scaling SSSE3 optimization
2017-10-13 marpan Adjust threshold in gf_boost for 1 pass vbr
2017-10-10 marpan Adjust to scene detection for 1 pass vbr.
2017-10-11 jianj vp9: use nonrd pick_intra for small blocks on keyframes.
2017-09-13 yinshiyou-hf vp8: [loongson] optimize dct with mmi
2017-10-11 linfengz Test extreme inputs in frame scale functions
2017-10-10 linfengz Generalize CheckScalingFiltering in ConvolveTest
2017-08-17 paulwilkins Further Corpus VBR change.
2017-05-19 paulwilkins Corpus Wide VBR test implementation.

Created with:
  roll-dep src/third_party/libvpx/source/libvpx
[email protected]

Bug: 
Change-Id: I39cdcda3185e169cb81953b2755b3a7a6ae03495
Reviewed-on: https://chromium-review.googlesource.com/729269
Reviewed-by: Johann Koenig <[email protected]>
Commit-Queue: Jerome Jiang <[email protected]>
Cr-Commit-Position: refs/heads/master@{#510520}
diff --git a/DEPS b/DEPS
index a4ac86a..76e2e22 100644
--- a/DEPS
+++ b/DEPS
@@ -425,7 +425,7 @@
   },
 
   'src/third_party/libvpx/source/libvpx':
-    Var('chromium_git') + '/webm/libvpx.git' + '@' +  'caa116c9be96508c18d533dedc95b2df4f8e3812',
+    Var('chromium_git') + '/webm/libvpx.git' + '@' +  '401e6d48bfd3cbf74a41da724d05c989e207662b',
 
   'src/third_party/libwebm/source':
     Var('chromium_git') + '/webm/libwebm.git' + '@' + '4956b2dec65352af32dc71bab553acb631c64177',