libvpx: Pull from upstream

Current HEAD: 1fc2b0fd00d4ba17bec8c89aa6eab503d77a3eed

git log from upstream:
d658216 Don't return value for void functions
baef0b8 Include type defines
31c03b3 VP9 denoiser bugfixes
c99a8fd Allow key frame more flexibility in mode search
fec6886 Remove labels from quantize
1eb6e68 Add superframe support for frame parallel decoding.
c9c4e13 Added CFLAG for outputting vp9 denoised signal
b56f3af Fixes in VP9 alloc, free, and COPY_FRAME case
0fec8f9 Improved vp9 denoiser running avg update.
ff38807 Implemented COPY_BLOCK case for vp9 denoiser
0d3ed08 sse4 regular quantize
2614e56 Changed buf_2ds in vp9 denoiser to YV12 buffers
a4b7a71 Update running avg for VP9 denoiser
2a72067 Implemented vp9_denoiser_{alloc,free}()
1368112 iosbuild.sh: Add vpx_config.h and vpx_version.h to VPX.framework.
55834d4 Modify non-rd intra mode checking
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0271c75 Hiding struct diff in *.c file.
f80bd43 Removing unused members from PICK_MODE_CONTEXT struct.
f07a96f Cosmetic clean up.
20ae20c Add test for vp9_spatial_svc_encoder example.
3d38cf9 tools_common.sh: Allow over ride of test name.
2a3092f Exit with error when vpxenc cannot correctly scale the input.
c03ae7d Add a TODO
6c2e88e Rewrite encoder input format handling.
e331203 Add test for vpx_temporal_svc_encoder example.
51545f5 Moving PC_TREE from MACROBLOCK to VP9_COMP.
0912ee1 Cleaning up vp9_cx_iface.c.
bc27d7e Add make target for running example tests.
3316e26 Remove unused varables
073fbdf Reusing swap_block_ptr() function.
3181290 Removing unused fields from twopass_rc struct.
be49292 Cleaning up vp9_pick_inter_mode().
f12ebfc make spatial svc an experiment
39015ea Making vp9_initialize_dec() static.
021eaab Hiding vp9_sub_pel_filters_{8, 8s, 8lp} filters in *.c file.
d31b836 Deadline is not supported in VP9 decoder, removing it completely.
f4b736a Removing decode_one_iter() function.

BUG=386801
TBR=tomfinegan@chromium.org

Review URL: https://codereview.chromium.org/341293003

git-svn-id: http://src.chromium.org/svn/trunk/deps/third_party/libvpx@278785 4ff67af0-8c30-449e-8e8b-ad334ec8d88c
263 files changed