Adding rects-specific GM

https://codereview.chromium.org/12934003/



git-svn-id: http://skia.googlecode.com/svn/trunk/gyp@8218 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/gmslides.gypi b/gmslides.gypi
index ae36de0..826bac8 100644
--- a/gmslides.gypi
+++ b/gmslides.gypi
@@ -65,6 +65,7 @@
     '../gm/points.cpp',
     '../gm/poly2poly.cpp',
     '../gm/quadpaths.cpp',
+    '../gm/rects.cpp',
     '../gm/rrect.cpp',
     '../gm/rrects.cpp',
     '../gm/samplerstress.cpp',