tree 8005d5920c4e367259e35ba37ba900451533a0f4
parent 5cf7b6175ecf2c469bc6fedb815ba68f748f02d2
author csmartdalton <csmartdalton@google.com> 1475179883 -0700
committer Commit bot <commit-bot@chromium.org> 1475179883 -0700

Add skstd version of std::exchange

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2381793004

Review-Url: https://codereview.chromium.org/2381793004