Disable --global-var-shortcuts.
Disable --global-var-shortcuts.

R=jkummerow@chromium.org
BUG=chromium:517778
LOG=Y

Review URL: https://codereview.chromium.org/1278353002

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#30084}

UniversalFuture/moosh,UniversalFuture/moosh,UniversalFuture/moosh,UniversalFuture/moosh