Use default value of is_directional_ in WebLocalFrameImpl

WebLocalFrameImpl sets is_directional_ value to false
explicitly for building SelectionTemplate.
By default the is_directional_ value is false in
SelectionTemplate so we don't need to explicitly set.

Bug: 740804
Change-Id: I8f332d441b0265a230240fec30e892c4d55d4776
Reviewed-on: https://chromium-review.googlesource.com/765751
Reviewed-by: Xiaocheng Hu <xiaochengh@chromium.org>
Reviewed-by: Yoshifumi Inoue <yosin@chromium.org>
Reviewed-by: David Bokan <bokan@chromium.org>
Commit-Queue: Tanvir Rizvi <tanvir.rizvi@samsung.com>
Cr-Commit-Position: refs/heads/master@{#516329}
1 file changed