Callback usage was removed in I67fb6e448f6ecc97c89c1187e491ee05f7a312ef
so this function may be removed.
Bug: T191532
Change-Id: I88f0d6740c9e9615faba2e3c60772269c705f43e
The hook that enables the Reading depth test should send an
additional paramter that specifies which test bucket the hook
being is calling from.
Bug: T191532
Change-Id: Ifd9f43220c476ece8a0c0cee46b62b58a717c616
Provides a class that initiates AB-test bucketing and registers
as a MF module. Activates the reading depth test for users who are bucketed
in either buckets "A" or "B".
Does not add event-logging or visual style changes for page issues AB test.
Bug: T193584
Change-Id: If8504a35059c6d1b056cef063a595b1c2ffd351a
Stephen Niedzielski
Jan Drewniak