GitLab

V8 API will deprecate the non maybe versions of v8::Object::Has
and v8::Object::Delete. Updated extensions/ to use maybe versions.

Bug: v8:7284
Change-Id: I966abdec0226c5999cacd5bf5daf993747179287
Reviewed-on: https://chromium-review.googlesource.com/c/1254208
Commit-Queue: Mythri Alle <mythria@chromium.org>
Reviewed-by: Devlin <rdevlin.cronin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#596209}