Revert of Move Dashing filterPath to a dashing utils file

Revert of Move Dashing filterPath to a dashing utils file (https://codereview.chromium.org/314623004/)

Reason for revert:
Need to create utils.gypi file and update chrome

Original issue's description:
> Move Dashing filterPath to a dashing utils file
> 
> From inside GrContext, we have a need to create an SkPath an original path and
> some dashing info. We do not have access to the original path effect so we need
> a way to make the FilterPath function accessible outside of the effect. So I moved
> the core filterPath code (and all need helper functions) out of SkDashPathEffect
> and created a SkDashPath in utils to store these helper functions.
> 
> BUG=skia:
> 
> Committed: https://skia.googlesource.com/skia/+/576dcdc793a762ec63fbecdbfd5768066b548fe5

TBR=bsalomon@google.com,reed@google.com,rmistry@google.com
NOTREECHECKS=true
NOTRY=true
BUG=skia:

Committed: https://skia.googlesource.com/skia/+/90b8cafb6a362bb5d5cca03b66ea57e97b9b43f2

[egdaniel, 2014-06-04 16:58:27]

Created Revert of Move Dashing filterPath to a dashing utils file

[commit-bot: I haz the power, 2014-06-04 16:59:02]

CQ is trying da patch. Follow status at
 https://skia-tree-status.appspot.com/cq/egdaniel@google.com/317663003/1

[commit-bot: I haz the power, 2014-06-04 16:59:12]

Change committed as 90b8cafb6a362bb5d5cca03b66ea57e97b9b43f2