Roll src/third_party/libvpx/source/libvpx/ a1cee8dc9..53747dfe6 (41 commits)

https://chromium.googlesource.com/webm/libvpx.git/+log/a1cee8dc919d..53747dfe65ea

$ git log a1cee8dc9..53747dfe6 --date=short --no-merges --format='%ad %ae %s'
2020-08-18 marpan vp9-svc: Fix to resetting RC for temporal layers
2020-08-17 marpan rtc-vp9: Fix to rcstats in vp9_spatial_svc_encoder
2020-08-10 angiebird Avoid re-allocating fp_motion_vector_info
2020-08-10 angiebird Cosmetic changes in simple_encode.h
2020-08-10 angiebird Correct the first pass motion vector scale
2020-08-10 angiebird Cosmetic change for simple_encode_test.cc
2020-08-07 angiebird Make target_frame_bits error margin configurable.
2020-08-07 angiebird Avoid division by zero for rate q_step model
2020-08-03 angiebird Add rq_history to encode_frame_result
2020-08-07 angiebird Fix ObserveFirstPassMotionVectors()
(...)
2020-07-15 angiebird Build libsimple_encode.a separately
2020-06-15 angiebird Add SetEncodeSpeed() to SimpleEncode
2020-07-07 jianj Cap target bitrate to raw rate internally
2020-07-07 jianj Cap target bitrate to raw rate internally
2020-07-09 jzern test/*: rename *TestCase to TestSuite
2020-07-09 jzern test/*: rename *TestCase to TestSuite
2020-07-01 jinbo-hf vp8,vpx_dsp:[loongson] fix bugs reported by clang
2020-06-29 jzern add CONTRIBUTING.md
2020-06-17 jzern update googletest to v1.10.0
2020-06-18 jzern vp9_skip_loopfilter_test: make Init() return a bool

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

Change-Id: Iaeeae89035f45fea2a7d83a9c54ef1ce8b0f9434
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2364030Reviewed-by: James Zern <jzern@google.com>
Commit-Queue: Jerome Jiang <jianj@google.com>
Cr-Commit-Position: refs/heads/master@{#799747}

DEPS

@@ -1148,7 +1148,7 @@ deps = {
   },
 
   'src/third_party/libvpx/source/libvpx':
-    Var('chromium_git') + '/webm/libvpx.git' + '@' +  'a1cee8dc919df1980d802e1a9bce1259ec34cba8',
+    Var('chromium_git') + '/webm/libvpx.git' + '@' +  '53747dfe65eaf670a7192f55117f3bf1e0280743',
 
   'src/third_party/libwebm/source':
     Var('chromium_git') + '/webm/libwebm.git' + '@' + '51ca718c3adf0ddedacd7df25fe45f67dc5a9ce1',

third_party/libvpx/README.chromium

@@ -6,9 +6,9 @@ License: BSD
 License File: source/libvpx/LICENSE
 Security Critical: yes
 
-Date: Monday July 06 2020
+Date: Tuesday August 18 2020
 Branch: master
-Commit: a1cee8dc919df1980d802e1a9bce1259ec34cba8
+Commit: 53747dfe65eaf670a7192f55117f3bf1e0280743
 
 Description:
 Contains the sources used to compile libvpx binaries used by Google Chrome and

third_party/libvpx/source/config/vpx_version.h

 // This file is generated. Do not edit.
 #define VERSION_MAJOR 1
-#define VERSION_MINOR 8
-#define VERSION_PATCH 2
-#define VERSION_EXTRA "214-ga1cee8dc9"
+#define VERSION_MINOR 9
+#define VERSION_PATCH 0
+#define VERSION_EXTRA "58-g53747dfe6"
 #define VERSION_PACKED \
   ((VERSION_MAJOR << 16) | (VERSION_MINOR << 8) | (VERSION_PATCH))
-#define VERSION_STRING_NOSP "v1.8.2-214-ga1cee8dc9"
-#define VERSION_STRING " v1.8.2-214-ga1cee8dc9"
+#define VERSION_STRING_NOSP "v1.9.0-58-g53747dfe6"
+#define VERSION_STRING " v1.9.0-58-g53747dfe6"