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If we have Arabic text in one line and English text in the second line
and select both lines then both touch handles will be right handles
(for RTL reasons). A previous CL (crrev.com/c/658599) assumed that
each handle had to have a different direction. This CL removes that
assumption.

Bug: 766466
Change-Id: Icdb725cc2cf21f593e90d5d90acbd2a489dbca1d
Reviewed-on: https://chromium-review.googlesource.com/678036Reviewed-by: Mohsen Izadi <mohsen@chromium.org>
Reviewed-by: Pedro Amaral <amaralp@chromium.org>
Commit-Queue: Pedro Amaral <amaralp@chromium.org>
Cr-Commit-Position: refs/heads/master@{#504215}