Add a flag to disable mask-filtered mask caching for Chrome

This close to branching, I'm inclined to disable this for M70.

Here is the Chrome-side CL that sets the flag:

https://chromium-review.googlesource.com/c/chromium/src/+/1193968 (
Disable mask-filtered mask caching in Skia)

Bug: 878195
Change-Id: Ifaf92fac80b75431badb52e0e5b09ccc57c08d8e
Reviewed-on: https://skia-review.googlesource.com/150080
Commit-Queue: Robert Phillips <robertphillips@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
1 file changed