commit 0117448155092540494f302397df47aa8c2bd421
author yosin <yosin@chromium.org> Tue Jul 05 07:45:27 2016
committer Commit bot <commit-bot@chromium.org> Tue Jul 05 07:48:20 2016
tree dbe585d8933d388b068427a42f1884a7f874dad0
parent 413d6473ff0d73fe335a5ed3e2d475cab6d868d5

Make ApplyStyleCommand::applyRelativeFontStyleChange() to handle AfterAnchor position correctly

This patch makes |ApplyStyleCommand::applyRelativeFontStyleChange()| to stop
node iteration from start position to end node position by using
|Position::nodeAsRangePastLastNode()| instead of |Position::anchorNode()| to
have correct beyond last node in below loop:

Node* beyondLast = end.anchorNode();
for (Node* node = startNode; node != beyondLast;
     node = NodeTraversal::next(node)) {
  ... use |node| ...
}

When |end| is |AfterAnchor| of previous sibling of |startNode|, above loop
doesn't stop.

BUG=619753
TEST=LayoutTests/editing/execCommand/font-size-delta-after-anchor-crash.html

Review-Url: https://codereview.chromium.org/2119083003
Cr-Commit-Position: refs/heads/master@{#403750}