Adding ability to dirty the allocation and notify shaders using it.

Change-Id: Id5ac8dbba5185cb1f43bedcf4098fcef9f477c51
diff --git a/libs/rs/rsAllocation.h b/libs/rs/rsAllocation.h
index 967f220..b6b5d2f 100644
--- a/libs/rs/rsAllocation.h
+++ b/libs/rs/rsAllocation.h
@@ -89,9 +89,9 @@
     void incRefs(const void *ptr, size_t ct) const;
     void decRefs(const void *ptr, size_t ct) const;
 
-protected:
     void sendDirty() const;
 
+protected:
     ObjectBaseRef<const Type> mType;
     void * mPtr;