Add DCHECK(rootBox) to InlineFlowBox::computeLogicalBoxHeights

Add DCHECK(rootBox) to InlineFlowBox::computeLogicalBoxHeights

BUG=664851
TBR=szager@chromium.org

Review-Url: https://codereview.chromium.org/2641573003
Cr-Commit-Position: refs/heads/master@{#444245}
Committed: https://chromium.googlesource.com/chromium/src/+/b59fc7500d6007bea7ec137c2d9239d30922e2c2

[eae, 2017-01-17 23:45:25]

The CQ bit was checked by eae@chromium.org

[commit-bot: I haz the power, 2017-01-17 23:46:14]

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, 2017-01-18 02:18:04]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1484696725106820, "parent_rev":
"8c8ff90c8edc7244e4e6d7feda073c76e6949b8e", "commit_rev":
"b59fc7500d6007bea7ec137c2d9239d30922e2c2"}

[commit-bot: I haz the power, 2017-01-18 02:18:33]

Description was changed from

==========
Add DCHECK(rootBox) to InlineFlowBox::computeLogicalBoxHeights

BUG=664851
TBR=szager@chromium.org
==========

to

==========
Add DCHECK(rootBox) to InlineFlowBox::computeLogicalBoxHeights

BUG=664851
TBR=szager@chromium.org

Review-Url: https://codereview.chromium.org/2641573003
Cr-Commit-Position: refs/heads/master@{#444245}
Committed:
https://chromium.googlesource.com/chromium/src/+/b59fc7500d6007bea7ec137c2d92...
==========

[commit-bot: I haz the power, 2017-01-18 02:18:35]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/b59fc7500d6007bea7ec137c2d92...