[CSS Shapes] line height grows around polygon and incorrectly causes text to wrap to next line

[CSS Shapes] line height grows around polygon and incorrectly causes text to wrap to next line

Correct an earlier PolygonShape fix crbug.com/368686.
When the top or bottom of a layout line is coincident with a polygon edge vertex, we
only consider it an intersection if the edge extends into the line.

This is a merge of http://trac.webkit.org/changeset/168778 by Hans Muller <hmuller@adobe.com>;.
    
BUG=363230
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=174333

[rwlbuis, 2014-05-14 15:35:11]

PTAL :)

[Hans Muller, 2014-05-14 15:37:00]

On 2014/05/14 15:35:11, rwlbuis wrote:
> PTAL :)

You should probably excise the -webkit- properties from the tests.  Other than
that, it looks good to me.

[rwlbuis, 2014-05-14 15:44:53]

PTAL, oneliner fix by Hans.

[rwlbuis, 2014-05-19 19:37:34]

Eric may be a bit busy so also trying Levi.

[eseidel, 2014-05-19 23:52:39]

lgtm

[commit-bot: I haz the power, 2014-05-19 23:52:52]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/rob.buis@samsung.com/286813002/20001

[commit-bot: I haz the power, 2014-05-20 00:39:01]

Change committed as 174333