Replace deprecated with non-deprecated V8 APIs

In most cases, we just CHECK() that no exception was thrown. Previously,
we'd just crash.

Ideally, this should all be fixed and the system should cope with those
exceptions, but that's beyond this CL.

R=tsepez@chromium.org
BUG=

Review URL: https://codereview.chromium.org/1126203010
4 files changed