Minor refactoring to remove duplicate enum from Ganesh (_SetOp -> SkRegion::Op)

http://codereview.appspot.com/6116047/



git-svn-id: http://skia.googlecode.com/svn/trunk@3763 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/include/gpu/SkGr.h b/include/gpu/SkGr.h
index 6bc6549..5ad90f4 100644
--- a/include/gpu/SkGr.h
+++ b/include/gpu/SkGr.h
@@ -108,7 +108,7 @@
     virtual void rewind() SK_OVERRIDE { this->reset(*fClipStack); }
     virtual GrClipType getType() const SK_OVERRIDE;
 
-    virtual GrSetOp getOp() const SK_OVERRIDE;
+    virtual SkRegion::Op getOp() const SK_OVERRIDE;
 
     virtual bool getDoAA() const SK_OVERRIDE;