Version 3.26.25 (based on bleeding_edge revision r20993)

Add timestamps to CPU profile samples (Chromium issue 363976).

Expose promise status through promise mirror (issue 3093).

Remove static CallCompletedCallback handlers.

Added an Isolate* field to NoTrackDoubleFieldsForSerializerScope, PlatformFeatureScope and BinaryOpIC::State (Chromium issue 359977).

Trigger debug event on not yet caught exception in promises (issue 3093).

Unbreak vtunejit=on (issue 3288).

Performance and stability improvements on all platforms.

git-svn-id: https://v8.googlecode.com/svn/trunk@20994 ce2b1a6d-e550-0410-aec6-3dcde31c8c00