Factor SVGMarkerPainter into SVGShapePainter

Factor SVGMarkerPainter into SVGShapePainter

SVGShapePainter is the only class to paint markers so the marker painter
class is all overhead. This patch moves the marker painter code into
SVGShapePainter.

BUG=412088
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=184895

[pdr., 2014-11-02 21:59:26]

pdr@chromium.org changed reviewers:
+ chrishtr@chromium.org, schenney@chromium.org

[chrishtr, 2014-11-06 02:56:22]

The CQ bit was checked by chrishtr@chromium.org

[chrishtr, 2014-11-06 02:56:22]

lgtm

[commit-bot: I haz the power, 2014-11-06 02:57:00]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/693313003/1

[commit-bot: I haz the power, 2014-11-06 04:17:29]

Committed patchset #1 (id:1) as 184895