Make IsEmptyTableCell() be a local function in SelectionAdjuster.cpp.

Move IsEmptyTableCell() out of EditingUtilities for better code
structure.

Bug: 802922

Signed-off-by: Zhuoyu Qian <zhuoyu.qian@samsung.com>
Change-Id: Ibbaeef1e6ebdfbf31c73c50a0ba81c1a16efe747
Reviewed-on: https://chromium-review.googlesource.com/942598
Reviewed-by: Xiaocheng Hu <xiaochengh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#540474}
3 files changed