[V8] Use Function.name for stack frames in v8::StackTrace (Chromium issue 17356).

Allow passing sourceMapUrl when compiling scripts (Chromium issue 462572).

convert compile functions to use maybe (issue 3929).

Performance and stability improvements on all platforms.

Cr-Commit-Position: refs/heads/4.3.23@{#1}
Cr-Branched-From: 948a973d458002cd3a66c14fb8635cb3256dc4b2-refs/heads/master@{#27030}