Add GM to test conic path rendering

Add GM to test conic path rendering

R=reed@google.com

Committed: https://code.google.com/p/skia/source/detail?r=9702

[egdaniel, 2013-06-20 15:15:54]

My guess is this test will show a few errors in both the cpu and gpu. Both seem
to fail when rendering filled very thin/closed conics. The Gpu still fails
additionally on any filled AA conic

[reed1, 2013-06-20 15:22:32]

just some modernization nits

https://codereview.chromium.org/17365006/diff/1/gm/conicpaths.cpp
File gm/conicpaths.cpp (right):

https://codereview.chromium.org/17365006/diff/1/gm/conicpaths.cpp#newcode21
gm/conicpaths.cpp:21: virtual SkISize onISize() { return make_isize(800, 600); }
SkISize::Make()

https://codereview.chromium.org/17365006/diff/1/gm/conicpaths.cpp#newcode21
gm/conicpaths.cpp:21: virtual SkISize onISize() { return make_isize(800, 600); }
SK_OVERRIDE

https://codereview.chromium.org/17365006/diff/1/gm/conicpaths.cpp#newcode161
gm/conicpaths.cpp:161: static GM* MyFactory(void*) { return new ConicPathsGM; }
DEF_GM( return new ConicPathsGM; )

[egdaniel, 2013-06-20 15:33:57]

fixed nits

[reed1, 2013-06-20 15:58:47]

lgtm

[egdaniel, 2013-06-20 16:54:37]

Committed patchset #2 manually as r9702 (presubmit successful).