Repaint selection even if SelectionPaintRange is same to previous.

We didn't anything if we have same {LayoutObject,offset}s but
 we need to repaint in the case where just CSS display property is
updated.

Bug: 739062, 639830
Change-Id: I2a9c7d69a87119dbc7679d1213ca39e8b277f7d3
Reviewed-on: https://chromium-review.googlesource.com/584665
Commit-Queue: Yoichi Osato <yoichio@chromium.org>
Reviewed-by: Yoshifumi Inoue <yosin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#489605}
8 files changed