Add the ability for gpu to render dotted lines (dashed line, 0 on interval, round caps)

src/gpu/effects/GrDashingEffect.h

Index: src/gpu/effects/GrDashingEffect.h
diff --git a/src/gpu/effects/GrDashingEffect.h b/src/gpu/effects/GrDashingEffect.h
index 809601778f22dc14b14b7cb3658c4a2421035975..a9afde2370ac596006b3763df6ae0d6f53757597 100644
--- a/src/gpu/effects/GrDashingEffect.h
+++ b/src/gpu/effects/GrDashingEffect.h
@@ -31,7 +31,7 @@ namespace GrDashingEffect {
      * position relative to the dashed line.
      */
     GrEffectRef* Create(GrEffectEdgeType edgeType, const SkPathEffect::DashInfo& info,
-                        SkScalar strokeWidth);
+                        SkScalar strokeWidth, bool isRoundCap);
 }
 
 #endif