Add workaround for failure to compile remoting plugin with GN
Add workaround for failure to compile remoting plugin with GN

PNaCl toolchain fails to compile libyuv with -O0. Rolled libyuv to a
version that always enabled optimizations in libyuv when compilging for
NaCl and enabled optimization when linking the plugin.

BUG=538243

Review URL: https://codereview.chromium.org/1396353003

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#353815}

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