Stop Custom Element registration if retrieving options throws an exception.

BUG=367814,375227

Review URL: https://codereview.chromium.org/299663010

git-svn-id: svn://svn.chromium.org/blink/trunk@174492 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Tracing: add file name information to v8.compile and v8.run.

Getting the file name for v8.run requires V8 to roll a fix (V8 r21398). Before
it has rolled, the file name will be NULL.

R=haraken@chromium.org
BUG=375268

Review URL: https://codereview.chromium.org/289283008

git-svn-id: svn://svn.chromium.org/blink/trunk@174493 bbb929c8-8fbe-4397-9dbb-9b2b20218538