Fix Android ASAN build

Android+ASAN was already using libc++, so don't confuse it with the host
library.

Bug: skia:
Change-Id: Ibdeb40007f9d346a84adb39de240299049c0c55e
Reviewed-on: https://skia-review.googlesource.com/107721
Reviewed-by: Mike Klein <mtklein@chromium.org>
Commit-Queue: Kevin Lubick <kjlubick@google.com>
1 file changed