Roll src/third_party/libaom/source/libaom/ e1ebb418e..0a7c8715d (137 commits)

https://aomedia.googlesource.com/aom.git/+log/e1ebb418ebdc..0a7c8715d792

$ git log e1ebb418e..0a7c8715d --date=short --no-merges --format='%ad %ae %s'
2020-07-06 jianj Revert "Add NEON version of av1_get_nz_map_contexts function"
2020-07-06 yaowu Shorten test time of AVxFirstPassEncoderThreadTest
2020-07-06 yaowu Shorten test time for AVxEncoderThreadTestLarge
2020-06-12 bohanli Unify temporal filtering of ARF and KF.
2020-07-02 wtc Pass correct second argument to _mm256_avg_epu16()
2020-07-04 yaowu Shorten Decode Test Time
2020-07-03 deepa.kg Fix number of workers in tpl multi-threading
2020-07-03 sanampudi.venkatarao Modularize NONE and SPLIT partition search
2020-07-02 nithya.vs Fix luma skip rd computation in hbd encoding
2020-07-01 vishesh.garg Group tuning related config in AV1EncoderConfig
(...)
2020-06-15 jingning Add 6-tap filter support to 2D interpolation AVX2
2020-06-15 jingning Redesign AVX2 2d interpolation filter
2020-06-14 jingning Support 6-tap AVX2 horizontal interpolation filter
2020-06-14 jingning Handle 6-tap interpolation filter
2020-06-15 chiyotsai Simplify code-flow in palette mode
2020-06-15 sarahparker Doxygen for process_compound_inter_mode
2020-06-15 sarahparker Doxygen for PruneInfoFromTpl
2020-06-16 jingning Clean up GF_GROUP data structure
2020-06-16 jingning Remove CHECK_PRECOMPUTED_REF_FRAME_MAP
2020-06-16 jingning Remove deprecated functions in gop_structure.c

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

Change-Id: Ia9f0e6262def027e592e9d5ab3c27de6d074ccef
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2284009
Reviewed-by: James Zern <jzern@google.com>
Commit-Queue: Jerome Jiang <jianj@google.com>
Cr-Commit-Position: refs/heads/master@{#785902}