Fix the V8_GNUC_PREREQ macro.
Fix the V8_GNUC_PREREQ macro.

BUG=

Review URL: https://codereview.chromium.org/1003383004

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#27442}

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