Uprev openh264 for enabling NEON

Uprev openh264 to include 2 patches:
https://chromium.googlesource.com/external/github.com/cisco/openh264/+/cc4daaf7ddf738357f8e099c4e15e2c379dc0b7f
and
https://chromium.googlesource.com/external/github.com/cisco/openh264/+/499291f1833294249ee0963644bc09f2cea4173d
so that we can enable NEON.

BUG=797648
TEST=Verified on minnie that NEON is enabled when using MediaRecorder.

Change-Id: I891114e4bc839d32ff8019fbe9c352d511e61220
Reviewed-on: https://chromium-review.googlesource.com/844302
Commit-Queue: Sheng-hao Tsao <[email protected]>
Reviewed-by: Henrik Boström <[email protected]>
Cr-Commit-Position: refs/heads/master@{#527907}
2 files changed