Roll src/third_party/libvpx/source/libvpx/ efa786d46..ac54d233b (5 commits)

https://chromium.googlesource.com/webm/libvpx.git/+log/efa786d4649c..ac54d233b6d7

$ git log efa786d46..ac54d233b --date=short --no-merges --format='%ad %ae %s'
2018-01-25 jianj Fix issue for 0 target bitrate in multi-res build.
2018-01-31 jzern vp9_scale_test: parameterize filter type
2018-01-31 marpan vp9-svc: Add condition on allocation for scaled_temp.
2018-01-31 marpan vp9-svc: Fix to initialize downsampling filters.
2018-01-15 paulwilkins Further change to code detecting slide transitions.

Created with:
  roll-dep src/third_party/libvpx/source/libvpx
R=johannkoenig@google.com

BUG=805863

Change-Id: Ieafbf459fa3230edf26ea742b7cc85fdfc88be11
Reviewed-on: https://chromium-review.googlesource.com/899605
Commit-Queue: Marco Paniconi <marpan@google.com>
Reviewed-by: Johann Koenig <johannkoenig@google.com>
Cr-Commit-Position: refs/heads/master@{#534151}

DEPS

@@ -484,7 +484,7 @@ deps = {
   },
 
   'src/third_party/libvpx/source/libvpx':
-    Var('chromium_git') + '/webm/libvpx.git' + '@' +  'efa786d4649cb39919170d745d4206309b463575',
+    Var('chromium_git') + '/webm/libvpx.git' + '@' +  'ac54d233b6d7ba5674996353a86bae42417022ee',
 
   'src/third_party/libwebm/source':
     Var('chromium_git') + '/webm/libwebm.git' + '@' + 'b03c65468b06d097f27235d93d76bfc45f490ede',

third_party/libvpx/README.chromium

 Name: libvpx
 URL: http://www.webmproject.org
-Version: v1.6.0
+Version: v1.7.0
 License: BSD
 License File: source/libvpx/LICENSE
 Security Critical: yes
 
-Date: Wednesday January 31 2018
+Date: Friday February 02 2018
 Branch: master
-Commit: efa786d4649cb39919170d745d4206309b463575
+Commit: ac54d233b6d7ba5674996353a86bae42417022ee
 
 Description:
 Contains the sources used to compile libvpx binaries used by Google Chrome and

third_party/libvpx/source/config/vpx_version.h

@@ -2,7 +2,7 @@
 #define VERSION_MAJOR  1
 #define VERSION_MINOR  7
 #define VERSION_PATCH  0
-#define VERSION_EXTRA  "84-gefa786d46"
+#define VERSION_EXTRA  "92-gac54d233b"
 #define VERSION_PACKED ((VERSION_MAJOR<<16)|(VERSION_MINOR<<8)|(VERSION_PATCH))
-#define VERSION_STRING_NOSP "v1.7.0-84-gefa786d46"
-#define VERSION_STRING      " v1.7.0-84-gefa786d46"
+#define VERSION_STRING_NOSP "v1.7.0-92-gac54d233b"
+#define VERSION_STRING      " v1.7.0-92-gac54d233b"