tree bc117af2acc040f14a5e3ab4c849ea863fa1db37
parent bd3e8cb42c50e7250e75452cd7f5cddc0b574de3
author mtklein <mtklein@chromium.org> 1436793336 -0700
committer Commit bot <commit-bot@chromium.org> 1436793336 -0700

Use SK_DECLARE_STATIC_MUTEX for global mutex.

This initializes the mutex at link time on non-Windows platforms,
rather than at pre-main-runtime like `static SkMutex gFoo;`

BUG=skia:

Review URL: https://codereview.chromium.org/1226403007