Push isEqual/onIsEqual down from GrProcessor to subclasses.

src/gpu/GrAAConvexPathRenderer.cpp

Index: src/gpu/GrAAConvexPathRenderer.cpp
diff --git a/src/gpu/GrAAConvexPathRenderer.cpp b/src/gpu/GrAAConvexPathRenderer.cpp
index 9e16177f310084bb74332b1a1d7fe8e586a3c4b8..00f886c4fa8fca03042cf72bb1eec921d41f4432 100644
--- a/src/gpu/GrAAConvexPathRenderer.cpp
+++ b/src/gpu/GrAAConvexPathRenderer.cpp
@@ -584,7 +584,7 @@ private:
                                                         GrShaderVar::kAttribute_TypeModifier))) {
     }
 
-    virtual bool onIsEqual(const GrProcessor& other) const SK_OVERRIDE {
+    virtual bool onIsEqual(const GrGeometryProcessor& other) const SK_OVERRIDE {
         return true;
     }