Using tab_test_util.h only in chrome_earl_grey.h

This is part of EG1 to EG2 migration, which involves moving EarlGrey code from
app-side helpers into test code. For GREYAsserts, the policy is to take assert-
containing-helpers, modify them to return NSError* with localizedDescription
containing the assert failure (in the event of a failure), and then assert
on the result of the helper on the test side.

Bug: 922813
Change-Id: I4704c5dc6bccd3eebbb5a5e939737ddbb030cbd0
Commit-Queue: Maksym Onufriienko <>
Reviewed-by: Eugene But <>
Cr-Commit-Position: refs/heads/master@{#662500}
39 files changed