Register type for literal list/map.

sdk/lib/_internal/compiler/implementation/elements/modelx.dart

Index: sdk/lib/_internal/compiler/implementation/elements/modelx.dart
diff --git a/sdk/lib/_internal/compiler/implementation/elements/modelx.dart b/sdk/lib/_internal/compiler/implementation/elements/modelx.dart
index 8e9bf312151ad629658b80ebcdb76d50a272ddfa..e16dc788c5ad5834e614d76fdf941181e2ae0c6e 100644
--- a/sdk/lib/_internal/compiler/implementation/elements/modelx.dart
+++ b/sdk/lib/_internal/compiler/implementation/elements/modelx.dart
@@ -1364,7 +1364,7 @@ abstract class BaseClassElementX extends ElementX implements ClassElement {
    *
    * This type is computed together with [thisType] in [computeType].
    */
-  InterfaceType rawType;
+  InterfaceType rawTypeCache;
   DartType supertype;
   DartType defaultClass;
   Link<DartType> interfaces;
@@ -1400,23 +1400,29 @@ abstract class BaseClassElementX extends ElementX implements ClassElement {
         Link<DartType> parameters = computeTypeParameters(compiler);
         thisType = new InterfaceType(this, parameters);
         if (parameters.isEmpty) {
-          rawType = thisType;
+          rawTypeCache = thisType;
         } else {
           var dynamicParameters = const Link<DartType>();
           parameters.forEach((_) {
             dynamicParameters =
                 dynamicParameters.prepend(compiler.types.dynamicType);
           });
-          rawType = new InterfaceType(this, dynamicParameters);
+          rawTypeCache = new InterfaceType(this, dynamicParameters);
         }
       } else {
         thisType = origin.computeType(compiler);
-        rawType = origin.rawType;
+        rawTypeCache = origin.rawType;
       }
     }
     return thisType;
   }
 
+  InterfaceType get rawType {
+    assert(invariant(this, rawTypeCache != null,
+                     message: 'Raw type has not been computed for $this'));
+    return rawTypeCache;
+  }
+
   Link<DartType> computeTypeParameters(Compiler compiler);
 
   /**