Make stencil and cover path rendering have more reasonable bounds.

include/gpu/GrDrawContext.h

Index: include/gpu/GrDrawContext.h
diff --git a/include/gpu/GrDrawContext.h b/include/gpu/GrDrawContext.h
index f051ebd994789faa7326cd4809fcf722aee6fcde..e0a9b0eedb4b2cdcf24f81272e272ff3a444dfa7 100644
--- a/include/gpu/GrDrawContext.h
+++ b/include/gpu/GrDrawContext.h
@@ -70,7 +70,8 @@ public:
                             GrColor color,
                             GrPathRange* range,
                             GrPathRangeDraw* draw,
-                            int /*GrPathRendering::FillType*/ fill);
+                            int /*GrPathRendering::FillType*/ fill,
+                            const SkRect& bounds);
 
     /**
      * Provides a perfomance hint that the render target's contents are allowed