Roll src/third_party/libvpx/source/libvpx/ edc9a4687..c6fcb9bb9 (16 commits)

https://chromium.googlesource.com/webm/libvpx.git/+log/edc9a4687699..c6fcb9bb94ea

$ git log edc9a4687..c6fcb9bb9 --date=short --no-merges --format='%ad %ae %s'
2018-03-03 jzern disable vp9_highbd_iht{4x4_16,8x8_64}_add_neon
2018-03-03 jzern disable vp9_iht8x8_64_add_neon
2018-03-03 jzern disable vp9_iht16x16_256_add_neon
2018-03-02 marpan vp9-svc: Disable partition_reuse unless 2x2 scale.
2018-03-01 marpan vp9-svc: Fix to downsampling filter phase_shift.
2018-02-28 jzern iadst16x16_256_add_half1d: fix array size
2018-02-26 linfengz Add vp9_iht16x16_256_add_neon()
2018-02-26 jzern datarate_test: correct last_pts_ref_ type
2018-02-26 linfengz Fix a bug in create_s16x4_neon()
2018-02-22 linfengz Clean test/dct_test.cc with testing::Combine
2018-02-21 jianj VP9 SVC: Datarate test for dynamic bitrate change.
2018-02-20 linfengz Add vp9_highbd_iht8x8_16_add_neon()
2018-02-20 johannkoenig remove deprecated 'register' keyword
2018-02-12 jianj vp9_cx_iface: Remove else when returning from the other branch.
2018-02-12 jianj VP9 ROI test clean up regarding bool type flag.
2018-02-05 kylesiefring Fold adds in 16->32-bit converts in SSE2/AVX2 fDCT

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

Change-Id: I90e68cab836f548e9d8502ed5c06191791d505a5
Reviewed-on: https://chromium-review.googlesource.com/952085
Reviewed-by: Johann Koenig <[email protected]>
Commit-Queue: Jerome Jiang <[email protected]>
Cr-Commit-Position: refs/heads/master@{#541231}
diff --git a/DEPS b/DEPS
index 352ac35e..b0c74c9 100644
--- a/DEPS
+++ b/DEPS
@@ -489,7 +489,7 @@
   },
 
   'src/third_party/libvpx/source/libvpx':
-    Var('chromium_git') + '/webm/libvpx.git' + '@' +  'edc9a4687699b372a0c27856020b42434ddc3014',
+    Var('chromium_git') + '/webm/libvpx.git' + '@' +  'c6fcb9bb94ea02324d9d842b71ac3d0ab0329c10',
 
   'src/third_party/libwebm/source':
     Var('chromium_git') + '/webm/libwebm.git' + '@' + 'b03c65468b06d097f27235d93d76bfc45f490ede',