Support type parameters and classes as expression in the vm.

runtime/vm/ast.cc

Index: runtime/vm/ast.cc
===================================================================
--- runtime/vm/ast.cc	(revision 24832)
+++ runtime/vm/ast.cc	(working copy)
@@ -137,6 +137,11 @@
 }
 
 
+const char* TypeNode::Name() const {
+  return String::Handle(type().UserVisibleName()).ToCString();
+}
+
+
 bool ComparisonNode::IsKindValid() const {
   return Token::IsRelationalOperator(kind_)
       || Token::IsEqualityOperator(kind_)
@@ -405,6 +410,11 @@
 }
 
 
+const char* LoadLocalNode::Name() const {
+  return local().name().ToCString();
+}
+
+
 bool LoadLocalNode::IsPotentiallyConst() const {
   // Parameters of const constructors are implicitly final and can be
   // used in initializer expressions.