Rolling v8/build/gyp to 28340b46df65f2c84f7793470189a0b395e1c9a4

TBR=machenbach@chromium.org,vogelheim@chromium.org,hablich@chromium.org

Review URL: https://codereview.chromium.org/1839563002

Cr-Commit-Position: refs/heads/master@{#35080}