Roll src/third_party/libvpx/source/libvpx/ 9aa083d16..afd869308 (18 commits).

https://chromium.googlesource.com/webm/libvpx.git/+log/9aa083d164e0..afd869308ef4

$ git log 9aa083d16..afd869308 --date=short --no-merges --format='%ad %ae %s'
2016-03-15 paulwilkins Revert "Fix bug in stats output for HBD."
2016-03-15 marpan vp9: Fix to scene cut/content change detection.
2016-03-15 huisu Fix typos in unit tests
2016-03-14 marpan vp9: Scene cut/content change detection: Adjust gf update.
2016-03-14 marpan vp9: Scene cut/slide change detection: Increse min_thresh.
2016-03-11 marpan vp9: Switch to model=1 for skin detection.
2016-03-11 marpan vp9: Fix issue in scene/content change detection.
2016-02-24 marpan vp9 non-rd pickmode. Some adjustments for vbr mode.
2016-03-10 marpan vp9: Update to skin detection.
2016-03-08 marpan vp9-svc: Fix to frame dropping in svc mode.
2016-03-08 marpan vp9-svc: Change default spatial bitrate allocation.
2016-03-08 jzern vp9_svc_layercontext(): fix proto mismatch
2016-03-08 marpan vp9-svc unitests: Add more tests for key frame periods.
2016-03-08 slavarnway VPX: loopfilter_mmx.asm using x86inc 2
2016-03-07 marpan vp9-resize tests: Update to real-time resize unittests.
2016-03-07 marpan vp9-svc: Fix to resetting pattern/flags on key frame.
2016-03-07 slavarnway define GET_GOT_DEFINED if not previously defined
2016-03-07 marpan vp9-svc: Non-rd pickmode, fix condition for testing zeromv for spatial ref.

R=johannkoenig@google.com

Review URL: https://codereview.chromium.org/1811993003

Cr-Commit-Position: refs/heads/master@{#381786}

DEPS

@@ -182,7 +182,7 @@ deps = {
     Var('chromium_git') + '/external/selenium/py.git' + '@' + '5fd78261a75fe08d27ca4835fb6c5ce4b42275bd',
 
   'src/third_party/libvpx/source/libvpx':
-   Var('chromium_git') + '/webm/libvpx.git' + '@' +  '9aa083d164e0d39086aa0c83f0d1a0d0f0d1ba61',
+   Var('chromium_git') + '/webm/libvpx.git' + '@' +  'afd869308ef4283c5a2b5e530b1f28cb9c596604',
 
   'src/third_party/ffmpeg':
    Var('chromium_git') + '/chromium/third_party/ffmpeg.git' + '@' + 'beef68513861e11156899b1f763097c31808c418',

third_party/libvpx/README.chromium

@@ -5,9 +5,9 @@ License: BSD
 License File: source/libvpx/LICENSE
 Security Critical: yes
 
-Date: Friday March 04 2016
+Date: Tuesday March 15 2016
 Branch: master
-Commit: 9aa083d164e0d39086aa0c83f0d1a0d0f0d1ba61
+Commit: afd869308ef4283c5a2b5e530b1f28cb9c596604
 
 Description:
 Contains the sources used to compile libvpx binaries used by Google Chrome and

third_party/libvpx/source/config/vpx_version.h

 #define VERSION_MAJOR  1
 #define VERSION_MINOR  5
 #define VERSION_PATCH  0
-#define VERSION_EXTRA  "578-g9aa083d"
+#define VERSION_EXTRA  "604-gafd8693"
 #define VERSION_PACKED ((VERSION_MAJOR<<16)|(VERSION_MINOR<<8)|(VERSION_PATCH))
-#define VERSION_STRING_NOSP "v1.5.0-578-g9aa083d"
-#define VERSION_STRING      " v1.5.0-578-g9aa083d"
+#define VERSION_STRING_NOSP "v1.5.0-604-gafd8693"
+#define VERSION_STRING      " v1.5.0-604-gafd8693"