GitLab

Remove SkiaRenderer's bool that tracks whether we are drawing root
render pass or child render pass. Also leads to deleting function on
SkiaOutputSurface since it knows the current render pass id and both
functions share majority of code.

Bug: 644851
Cq-Include-Trybots: luci.chromium.try:android_optional_gpu_tests_rel
Change-Id: I332012ed89f5edc825acaee4230f28bdfc271044
Reviewed-on: https://chromium-review.googlesource.com/1241734
Commit-Queue: weiliangc <weiliangc@chromium.org>
Reviewed-by: Peng Huang <penghuang@chromium.org>
Reviewed-by: enne <enne@chromium.org>
Cr-Commit-Position: refs/heads/master@{#594429}