google/tracing-framework — pull request #393 by chihuahua (2013-07-22 16:48:12+00:00)
Title: Removed === from graphics replay files.

Removed the triple comparison operator from graphics replay files since the operator makes comparisons brittle. The substep index of a playback (which denotes the current call within the current step) now returns -1 instead of null if no current substep exists.