Adding gm test steps for rtree and tileGrid

Adding gm test steps for rtree and tileGrid

The new passes are enabled by default, and can be disabled with --nortree and --notileGrid.
With this change, the skia buildbots will begin continuously testing rtree and tileGrid.

BUG=http://code.google.com/p/skia/issues/detail?id=1014
TEST=gm
Committed: https://code.google.com/p/skia/source/detail?r=6886

[junov1, 2012-12-18 20:48:48]

PTAL

https://codereview.appspot.com/6941072/diff/1/gm/gm.h
File gm/gm.h (left):

https://codereview.appspot.com/6941072/diff/1/gm/gm.h#oldcode42
gm/gm.h:42: kRTree_Flag         = 1 << 5,
Cleanup: these flags were unused.

[EricB, 2012-12-18 20:55:52]

LGTM with nit.  Have these been fixed, or will the bots start failing once this
is committed?

https://codereview.appspot.com/6941072/diff/1/gm/gmmain.cpp
File gm/gmmain.cpp (right):

https://codereview.appspot.com/6941072/diff/1/gm/gmmain.cpp#newcode1322
gm/gmmain.cpp:1322: &comparisonBitmap);
Nit: alignment

https://codereview.appspot.com/6941072/diff/1/gm/gmmain.cpp#newcode1335
gm/gmmain.cpp:1335: &comparisonBitmap);
Nit: alignment

[junov1, 2012-12-18 21:07:14]

On 2012/12/18 20:55:52, EricB wrote:
> LGTM with nit.  Have these been fixed, or will the bots start failing once
this
> is committed?

They've been fixed.
See: http://code.google.com/p/skia/issues/detail?id=1014

[EricB, 2012-12-18 21:08:23]

On 2012/12/18 21:07:14, junov1 wrote:
> On 2012/12/18 20:55:52, EricB wrote:
> > LGTM with nit.  Have these been fixed, or will the bots start failing once
> this
> > is committed?
> 
> They've been fixed.
> See: http://code.google.com/p/skia/issues/detail?id=1014

Great!