Renaming type classes as discussed:

runtime/vm/ast.h

Index: runtime/vm/ast.h
===================================================================
--- runtime/vm/ast.h	(revision 1948)
+++ runtime/vm/ast.h	(working copy)
@@ -353,21 +353,21 @@
 
 class TypeNode : public AstNode {
  public:
-  TypeNode(intptr_t token_index, const Type& type)
+  TypeNode(intptr_t token_index, const AbstractType& type)
       : AstNode(token_index), type_(type) {
     ASSERT(type.IsZoneHandle());
     ASSERT(!type.IsNull());
     ASSERT(type.IsFinalized());
   }
 
-  const Type& type() const { return type_; }
+  const AbstractType& type() const { return type_; }
 
   virtual void VisitChildren(AstNodeVisitor* visitor) const { }
 
   DECLARE_COMMON_NODE_FUNCTIONS(TypeNode);
 
  private:
-  const Type& type_;
+  const AbstractType& type_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(TypeNode);
 };
@@ -377,7 +377,7 @@
  public:
   AssignableNode(intptr_t token_index,
                  AstNode* expr,
-                 const Type& type,
+                 const AbstractType& type,
                  const String& dst_name)
       : AstNode(token_index), expr_(expr), type_(type), dst_name_(dst_name) {
     ASSERT(expr_ != NULL);
@@ -388,7 +388,7 @@
   }
 
   AstNode* expr() const { return expr_; }
-  const Type& type() const { return type_; }
+  const AbstractType& type() const { return type_; }
   const String& dst_name() const { return dst_name_; }
 
   virtual void VisitChildren(AstNodeVisitor* visitor) const {
@@ -399,7 +399,7 @@
 
  private:
   AstNode* expr_;
-  const Type& type_;
+  const AbstractType& type_;
   const String& dst_name_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(AssignableNode);