Remove element from DynamicType.

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 3770c6f21464612cc05eef8ec2f536d1fdb8071d..880746ad38ef4c90280f36f52aab2c966b9bea0d 100644
--- a/sdk/lib/_internal/compiler/implementation/elements/modelx.dart
+++ b/sdk/lib/_internal/compiler/implementation/elements/modelx.dart
@@ -1001,7 +1001,7 @@ class PrefixElementX extends ElementX implements PrefixElement {
 
   Element lookupLocalMember(String memberName) => importScope[memberName];
 
-  DartType computeType(Compiler compiler) => compiler.types.dynamicType;
+  DartType computeType(Compiler compiler) => const DynamicType();
 
   Token get position => firstPosition;
 
@@ -1623,7 +1623,7 @@ class DeferredLoaderGetterElementX extends FunctionElementX {
   FunctionSignature computeSignature(Compiler compiler) {
     if (functionSignatureCache != null) return functionSignature;
     compiler.withCurrentElement(this, () {
-      DartType inner = new FunctionType(this, compiler.types.dynamicType);
+      DartType inner = new FunctionType(this);
       functionSignatureCache = new FunctionSignatureX(const Link(),
           const Link(), 0, 0, false, [], inner);
     });
@@ -1795,7 +1795,7 @@ abstract class TypeDeclarationElementX<T extends GenericType>
       Link<DartType> dynamicParameters = const Link<DartType>();
       typeParameters.forEach((_) {
         dynamicParameters =
-            dynamicParameters.prepend(compiler.types.dynamicType);
+            dynamicParameters.prepend(const DynamicType());
       });
       rawTypeCache = createType(dynamicParameters);
     }