Version 3.28.62 (based on bleeding_edge revision r22958)

Only escape U+0022 in argument values of `String.prototype` HTML methods (issue 2217).

Update webkit test for expected own properties.

This implements unscopables (issue 3401).

Add `CheckObjectCoercible` for the `String.prototype` HTML methods (issue 2218).

Add initial support for compiler unit tests using GTest/GMock (issue 3489).

Trigger exception debug events on Promise reject (Chromium issue 393913).

Refactor unit tests for the base library to use GTest (issue 3489).

Performance and stability improvements on all platforms.

git-svn-id: https://v8.googlecode.com/svn/trunk@22960 ce2b1a6d-e550-0410-aec6-3dcde31c8c00