Add the ability to iterate through a path without modification. This change is

Add the ability to iterate through a path without modification. This change is
required by WebKit SVG in order to correctly draw markers and endcaps.

BUG=415
TEST=TestPath in the unit tests
Committed: http://code.google.com/p/skia/source/detail?r=2962

[reed1, 2012-01-03 20:50:49]

Don't close this until SkPath::addPath has been modified. Right now it uses the
default SkPath::Iter, but it should use the raw iterator. However, this will
change the JS return values in Chrome, so we need to do some homework first.

[Stephen Chenney, 2012-01-04 18:26:51]

We're in good shape w.r.t. JS return values. They all make use of an
intermediate format. The Skia SkPath representation is purely a target of state
changes, never a supplier of state to anything but the renderer.

http://codereview.appspot.com/5505097/diff/1/src/core/SkPath.cpp
File src/core/SkPath.cpp (right):

http://codereview.appspot.com/5505097/diff/1/src/core/SkPath.cpp#newcode938
src/core/SkPath.cpp:938: Iter    iter(path, false);
Change this to a RawIter.

[Stephen Chenney, 2012-01-04 20:05:38]

I hope we can get this in soon, as now I'm ready (finally) to move onto SVG work
that needs it. Still, I really want to get it done right and welcome comments.

[reed1, 2012-01-04 20:42:49]

If we don't have an immediate caller for dumpRaw(), perhaps we can skip that
(I'd like to delete or move to utils file the existing dump() as well). Other
than that, LGTM.

[Stephen Chenney, 2012-01-04 21:05:40]

I've removed the dumpRaw. Committing now. Thanks for the rapid attention.