Implement eager instantiation and canonicalization of type arguments at run

runtime/lib/object.cc

Index: runtime/lib/object.cc
===================================================================
--- runtime/lib/object.cc	(revision 32446)
+++ runtime/lib/object.cc	(working copy)
@@ -114,8 +114,8 @@
   // Instantiator at position 1 is not used. It is passed along so that the call
   // can be easily converted to an optimized implementation. Instantiator is
   // used to populate the subtype cache.
-  const AbstractTypeArguments& instantiator_type_arguments =
-      AbstractTypeArguments::CheckedHandle(arguments->NativeArgAt(2));
+  const TypeArguments& instantiator_type_arguments =
+      TypeArguments::CheckedHandle(arguments->NativeArgAt(2));
   const AbstractType& type =
       AbstractType::CheckedHandle(arguments->NativeArgAt(3));
   const Bool& negate = Bool::CheckedHandle(arguments->NativeArgAt(4));
@@ -159,8 +159,8 @@
   // Instantiator at position 1 is not used. It is passed along so that the call
   // can be easily converted to an optimized implementation. Instantiator is
   // used to populate the subtype cache.
-  const AbstractTypeArguments& instantiator_type_arguments =
-      AbstractTypeArguments::CheckedHandle(arguments->NativeArgAt(2));
+  const TypeArguments& instantiator_type_arguments =
+      TypeArguments::CheckedHandle(arguments->NativeArgAt(2));
   const AbstractType& type =
       AbstractType::CheckedHandle(arguments->NativeArgAt(3));
   ASSERT(type.IsFinalized());