GitLab

Fix GCState transition checks for when incrmental marking is enabled

Bug: 757440
Change-Id: I01cf15b45800d15bd50542824f64dd24d8e0ef0f
Reviewed-on: https://chromium-review.googlesource.com/991621Reviewed-by: Kentaro Hara <haraken@chromium.org>
Commit-Queue: Keishi Hattori <keishi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#547654}