Add type checks to V8HostDefinedOptions deserializer

Bug: 973893
Change-Id: I81804eaa9874515e5549290b6776dfdda14e2c0f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1668371
Reviewed-by: Yutaka Hirano <yhirano@chromium.org>
Commit-Queue: Kouhei Ueno <kouhei@chromium.org>
Cr-Commit-Position: refs/heads/master@{#670784}
1 file changed