[ganesh] Force gpu submit when there are too many render passes

Track the pending render passes with the existing
fCurrentSubmitRenderPassCount.  Force a gpu submit when there are too
many (currently 100) pending render passes.

Bug: b/376306108
Change-Id: I72e8c71bca533f8fbf7794b327181d0df24b57ef
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/943136
Commit-Queue: Chia-I Wu <olv@google.com>
Reviewed-by: Greg Daniel <egdaniel@google.com>
3 files changed