Add kRequiresManualMSAAResolve to GrInternalSurfaceFlags

We will use this flag to check whether a proxy needs manual msaa
resolve, and if so, install a render task to do just that when it is
dirty and about to be read from.

For the time being, we are leaving GrRenderTarget::getResovleType in
place. This will allow us to assert that requiresManualMSAAResolve
works as expected. Long term, we plan to delete the former in favor of
the latter.

Bug: skia:
Change-Id: I155fa2a6d876edd339232c7c8208015d5da2c8ee
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/234436
Commit-Queue: Chris Dalton <csmartdalton@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
14 files changed