[iOS] Don't add OpenInNewTab animation on iPad

This CL don't trigger the new animation for OpenInNewTab when the
TabStrip is present as the TabStrip already have an animation.

Bug: none
Cq-Include-Trybots: luci.chromium.try:ios-simulator-full-configs;master.tryserver.chromium.mac:ios-simulator-cronet
Change-Id: I2cb7a5e67695b2249373a519e6521523dfa0354d
Reviewed-on: https://chromium-review.googlesource.com/1140159
Reviewed-by: Rohit Rao <rohitrao@chromium.org>
Commit-Queue: Gauthier Ambard <gambard@chromium.org>
Cr-Commit-Position: refs/heads/master@{#575618}
1 file changed