libvpx: Pull from upstream

libvpx: Pull from upstream

Current HEAD: 49fef904054b668881dfb21e37bcb60d571cb2c5

git log from upstream:
69dc876 Set uv_crop_height/width in all the places
b77ef13 vpxdec.sh: Fix some style nits.
28b1437 Remove a unused speed feature
4d91e16 examples.sh: Run all example tests.
965af79 vp8cx_set_ref: Flush encoder.
f1ec9e8 Cleaning up vp9_encoder.c.
31e54bb Removing active_arnr_{strength, frames} from VP9_COMP.
4851b99 Removes fileno check to prevent valgrind error
a0d8ddb vpxenc.sh: use --test-decode=fatal for vp9
8db245b Add an adaptive denoising mode.
21a0dad vp8: Modify to use closest reference in zero_mv bias.
a07d09f vp9_copy_reference_dec: check ref frame index before use
d67b608 Remove redundant vp9_init_plane_quantizers call
efdfdf5 32 Align Load bug In the sub_pixel_avg_variance the parameter sec was also aligned load and changed to unaligned.
89a213b get_ref_frame: fix test for valid buffer.
5966586 Mask out H_PRED and V_PRED for 32x32 blocks
4d6d061 Set max_intra_bsize to 32x32
4e30565 Fix bug 837: realloc mode info buffers on resize
c89d151 vpx_codec_internal.h : clean out unused function warning
741a23c Replace current_video_frame with better alternatives
ccef884 Allow full coeff probability model and cost update
1e30547 Skip mode search based on reference frame consistency
0daadeb Enable motion field based mode seach skip
b6a4180 Simplify select_tx_mode()
1c62031 cq_test: allow test cases to be run out of order
17ea6ab Initialization to prevent asan failure on google3
a6a997d vpx_internal_error -> fix -Wunused-function issues
caffcb8 decode_api_test: fix type conversion warning
3a7d467 libyuv: update to r1041
3caed4f get_ref_frame: check ref_frame_map value
7d9da93 VP8D_GET_FRAME_CORRUPTED: check frame pointer
07a6752 inline vpx functions in headers to avoid unused function warning
f452961 fixes several -Wunused-function warnings
3011c53 Fix a run-time integer overflow
5c55202 intra blocks disallowed inadvertently
a463513 Rework y4mwrite test to pass google3 tests

TBR=tomfinegan@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=290056

[Johann, 2014-08-15 23:57:17]

Committed patchset #1 manually as r290056 (presubmit successful).

[Tom Finegan, 2014-08-16 00:05:50]

lgtm