Push creation of default GP to the caller

src/gpu/GrDefaultGeoProcFactory.h

Index: src/gpu/GrDefaultGeoProcFactory.h
diff --git a/src/gpu/GrDefaultGeoProcFactory.h b/src/gpu/GrDefaultGeoProcFactory.h
index 26ce66249a7d8dce1ef3b3d81c8d434d985a572f..99d85b64d634b08ba2aa9be67ebf48ac589251fd 100644
--- a/src/gpu/GrDefaultGeoProcFactory.h
+++ b/src/gpu/GrDefaultGeoProcFactory.h
@@ -75,9 +75,16 @@ public:
         kLastGPType = kCoverage_GPType
     };
 
-    // YOU MUST UNREF
-    static const GrGeometryProcessor* CreateAndSetAttribs(GrDrawState*, uint32_t GPTypeFlags);
-    static const GrGeometryProcessor* Create();
+    /*
+     * The following functions are used to create default GPs.  If you just need to create
+     * attributes seperately from creating the default GP, use the SetAttribs function followed
+     * by the Create function.  Otherwise use CreateAndSetAttribs to do both at once.
+     *
+     * You must unref the return from Create.
+     */
+    static void SetAttribs(GrDrawState*, uint32_t GPTypeFlags = 0);
+    static const GrGeometryProcessor* CreateAndSetAttribs(GrDrawState*, uint32_t GPTypeFlags = 0);
+    static const GrGeometryProcessor* Create(bool hasAttributeCoverage);
 };
 
 #endif