Fix LayoutTreeBuilderTraversal limit checks when recursing.

Fix LayoutTreeBuilderTraversal limit checks when recursing.

Before this commit, we were checking for limit == 0, which is wrong given we
postdecrement (so when we actually run out of siblings we should keep limit
equal to -1).

BUG=657748
TEST=third_party/WebKit/Source/core/dom/LayoutTreeBuilderTraversalTest.cpp

Review-Url: https://codereview.chromium.org/2715353002
Cr-Commit-Position: refs/heads/master@{#453435}
Committed: https://chromium.googlesource.com/chromium/src/+/090729aac055ae7eb04e6056ef27f6affc9ee893

[emilio, 2017-02-27 18:18:32]

Description was changed from

==========
Fix LayoutTreeBuilderTraversal limit checks when recursing.

Before this commit, we were checking for limit == 0, which is wrong given we
postdecrement (so when we actually run out of siblings we should keep limit
equal to -1).

BUG=657748
TESTS=third_party/WebKit/Source/core/dom/LayoutTreeBuilderTraversalTest.cpp
==========

to

==========
Fix LayoutTreeBuilderTraversal limit checks when recursing.

Before this commit, we were checking for limit == 0, which is wrong given we
postdecrement (so when we actually run out of siblings we should keep limit
equal to -1).

BUG=657748
TEST=third_party/WebKit/Source/core/dom/LayoutTreeBuilderTraversalTest.cpp
==========

[emilio, 2017-02-27 18:20:20]

ecobos@igalia.com changed reviewers:
+ rune@opera.com

[emilio, 2017-02-27 18:20:21]

Hi rune, please take a look, this is split from
https://codereview.chromium.org/2719713002/

[rune, 2017-02-27 23:16:34]

lgtm

[emilio, 2017-02-27 23:39:22]

The CQ bit was checked by ecobos@igalia.com

[commit-bot: I haz the power, 2017-02-27 23:39:55]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-02-28 01:20:22]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1488238762897840, "parent_rev":
"25df673104a75dd667bc529e201ca55a09aaf954", "commit_rev":
"090729aac055ae7eb04e6056ef27f6affc9ee893"}

[commit-bot: I haz the power, 2017-02-28 01:21:39]

Description was changed from

==========
Fix LayoutTreeBuilderTraversal limit checks when recursing.

Before this commit, we were checking for limit == 0, which is wrong given we
postdecrement (so when we actually run out of siblings we should keep limit
equal to -1).

BUG=657748
TEST=third_party/WebKit/Source/core/dom/LayoutTreeBuilderTraversalTest.cpp
==========

to

==========
Fix LayoutTreeBuilderTraversal limit checks when recursing.

Before this commit, we were checking for limit == 0, which is wrong given we
postdecrement (so when we actually run out of siblings we should keep limit
equal to -1).

BUG=657748
TEST=third_party/WebKit/Source/core/dom/LayoutTreeBuilderTraversalTest.cpp

Review-Url: https://codereview.chromium.org/2715353002
Cr-Commit-Position: refs/heads/master@{#453435}
Committed:
https://chromium.googlesource.com/chromium/src/+/090729aac055ae7eb04e6056ef27...
==========

[commit-bot: I haz the power, 2017-02-28 01:21:40]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/090729aac055ae7eb04e6056ef27...