Rename Type to DartType to avoid conflicts with the class Type in the core library.

tests/compiler/dart2js/type_checker_test.dart

Index: tests/compiler/dart2js/type_checker_test.dart
diff --git a/tests/compiler/dart2js/type_checker_test.dart b/tests/compiler/dart2js/type_checker_test.dart
index 1d5b31f1e5e9d76266e184468cad1e3bcd2d3806..2ca45f7aa87ccd1d29d479c74be613e690864e48 100644
--- a/tests/compiler/dart2js/type_checker_test.dart
+++ b/tests/compiler/dart2js/type_checker_test.dart
@@ -353,10 +353,10 @@ testThis() {
 
 testFunctionSubtyping() {
   // Checks that the type (in1 -> out1) is a subtype of (in2 -> out2).
-  bool isSubtype(List<Type> in1, Type out1, List<Type> in2, Type out2) {
+  bool isSubtype(List<DartType> in1, Type out1, List<Type> in2, Type out2) {
     return compiler.types.isSubtype(
-        new FunctionType(out1, new Link<Type>.fromList(in1), null),
-        new FunctionType(out2, new Link<Type>.fromList(in2), null));
+        new FunctionType(out1, new Link<DartType>.fromList(in1), null),
+        new FunctionType(out2, new Link<DartType>.fromList(in2), null));
   }
   Expect.isTrue(isSubtype([], intType, [], intType));
   Expect.isTrue(isSubtype([], intType, [], objectType));