SkiaOutputSurface: Fix a crash related to presnetation feedback

Bug: 824382, 727775
Cq-Include-Trybots: luci.chromium.try:android_optional_gpu_tests_rel
Change-Id: If75f42895bfc2a41ec3c4cf1bbe0e24b37743c36
Reviewed-on: https://chromium-review.googlesource.com/1089041
Reviewed-by: Sadrul Chowdhury <sadrul@chromium.org>
Commit-Queue: Peng Huang <penghuang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#565292}
1 file changed