Begin weaning GrClipMaskManager off of GrDrawTarget (take 2)

include/gpu/GrClip.h

Index: include/gpu/GrClip.h
diff --git a/include/gpu/GrClip.h b/include/gpu/GrClip.h
index cf6e65c976289c52906e3db2183c7ce884cc6a5d..0f6f2e081fa34a45526a987f7c52885b61edee20 100644
--- a/include/gpu/GrClip.h
+++ b/include/gpu/GrClip.h
@@ -114,6 +114,13 @@ public:
         }
     }
 
+    void setScissor(const SkIRect& scissor) {

[bsalomon, 2016/03/01 17:38:55]

Can we call this setIRect()? Seems like this should operate at the level of
geometries without making assumptions about implementation.

[robertphillips, 2016/03/01 20:11:57]

Done.

+        this->reset();
+        fClipType = kIRect_ClipType;
+        fOrigin.setZero();
+        fClip.fIRect = scissor;
+    }
+
     const SkIRect& irect() const {
         SkASSERT(kIRect_ClipType == fClipType);
         return fClip.fIRect;