Temporarily make SkTMultiMap::remove() safe for values not in map

Bug: chromium:877915
Change-Id: I2afdabdefaf97a498c924a98fffce73c200af4ee
Reviewed-on: https://skia-review.googlesource.com/150128
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
1 file changed