Fix blurred shadow rendering for hairline stroked paths

When drawing shadows of paths we were failing to pass down the information on whether to draw the path stroked or filled. filled was assumed, which failed to render hairline paths correctly.

A similar bug also exists in the GPU and XPS devices, which I will fix in separate CLs.  I also have a gm test, which I will submit once all the fixes are in.  I have a WebKit Layout Test that I will submit once all this rolls in.

All this is for this bug: http://code.google.com/p/chromium/issues/detail?id=121251

[junov1, 2012-04-03 19:06:45]

PTAL

[junov1, 2012-04-03 21:21:12]

On 2012/04/03 19:06:45, junov1 wrote:
> PTAL

Adding bsalomon as reviewer (reed is OOO)

[bsalomon, 2012-04-04 14:17:15]

On 2012/04/03 21:21:12, junov1 wrote:
> On 2012/04/03 19:06:45, junov1 wrote:
> > PTAL
> 
> Adding bsalomon as reviewer (reed is OOO)

I'm a poor substitute for Mike :) I give a low confidence LGTM (not because I'm
doubtful of the change but because of unfamiliarity with the code being
touched).

[junov1, 2012-04-04 14:27:44]

> I'm a poor substitute for Mike :) I give a low confidence LGTM (not because
I'm
> doubtful of the change but because of unfamiliarity with the code being
> touched).

Thanks.
I'll gladly re-iterate after the fact if Mike has additional feedback.  
I will make sure there are no webkit layout test regressions before submitting.

[junov1, 2012-07-16 15:55:54]

fixed with r3592