Version 4.2.77.9 (cherry-pick)

Merged ddfca2b0

Bugfix in hydrogen GVN.

BUG=chromium:467481
LOG=N
R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/1020473006

Cr-Commit-Position: refs/branch-heads/4.2@{#10}
Cr-Branched-From: 3dfd929e-refs/heads/4.2.77@{#2}
Cr-Branched-From: e0110920-refs/heads/master@{#26757}