This reverts commit 9a7a2ee5ad.
Reason for revert: still need to update blink_headless in Google3
Original change's description:
> remove SkCanvas::kIsOpaque_SaveLayerFlag
>
> This is a performance-only hint that no one but fuzzers
> is using. It's even explicitly filtered out in Android.
>
> The fuzzers have noticed they can trick us into allocating
> uninitialized memory and treating it as opaque, blending
> uninitialized pixels, etc.
>
> Since no one's using this, we can just kill the bit.
>
> Bug: skia:7566, chromium:808830
>
> Change-Id: Id74a85e51bc4d0907b4127eb9ac5b02576f8f0a7
> Reviewed-on: https://skia-review.googlesource.com/104441
> Reviewed-by: Mike Reed <reed@google.com>
> Commit-Queue: Mike Klein <mtklein@chromium.org>
TBR=mtklein@chromium.org,fmalita@chromium.org,reed@google.com
Change-Id: I10d3c7e5184b9322715a5bfb6a7106292c8876a3
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: skia:7566, chromium:808830
Reviewed-on: https://skia-review.googlesource.com/104781
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
9ff8c8c073