Export angle::PlatformMethods. This should fix undefined function call sanitizer warnings. BUG=chromium:778918 Change-Id: I718d58edd7b75a3fca1089edc4df7f3251d85153 Reviewed-on: https://chromium-review.googlesource.com/767152 Reviewed-by: Jamie Madill <jmadill@chromium.org> Commit-Queue: Jamie Madill <jmadill@chromium.org>