Shard v8_base.lib on Windows to avoid 2G .lib limit (Chromium issue 485155).

Implement a 'trial parse' step, that will abort pre-parsing excessively long and trivial functions, so that they can be eagerly compiled after all. This essentially allows the parser to renege on its earlier decision to lazy-parse, if additional information suggests it was a bad decision (Chromium issue 470930).

Performance and stability improvements on all platforms.

Cr-Commit-Position: refs/heads/4.4.56@{#1}
Cr-Branched-From: 62bd294f909ff448d0f876a3d745966a24cdc3f7-refs/heads/master@{#28277}