[ios] Rolls EarlGrey1 to 25fc49c5e57b8d25e4011efdd6a96024d3e6b96e.

Fixes a call to an NS_UNAVAILABLE inititalizer.

BUG=917351

Change-Id: I3c1471f3fe0764c8e03d026b28bf7b90e44fe9f5
Reviewed-on: https://chromium-review.googlesource.com/c/1394390
Commit-Queue: Rohit Rao <rohitrao@chromium.org>
Commit-Queue: Justin Cohen <justincohen@chromium.org>
Reviewed-by: Justin Cohen <justincohen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#619665}
2 files changed