Use correct types on cloned constructors in mixin applications.

pkg/front_end/test/fasta/rasta/unresolved_for_in.dart.direct.expect

Index: pkg/front_end/test/fasta/rasta/unresolved_for_in.dart.direct.expect
diff --git a/pkg/front_end/test/fasta/rasta/unresolved_for_in.dart.direct.expect b/pkg/front_end/test/fasta/rasta/unresolved_for_in.dart.direct.expect
index 1d5ea673cf6f86e8be836d3456801c2bfc35b621..f0d4c36018093d39e8620c0b37b1a643dc7661b6 100644
--- a/pkg/front_end/test/fasta/rasta/unresolved_for_in.dart.direct.expect
+++ b/pkg/front_end/test/fasta/rasta/unresolved_for_in.dart.direct.expect
@@ -3,51 +3,43 @@ import self as self;
 import "dart:core" as core;
 
 class Fisk extends core::Object {
-  constructor •() → self::Fisk
-    : super core::Object::•();
+  constructor •() → void
+    : super core::Object::•()
+    ;
   method it1(dynamic x) → dynamic {
     for (final dynamic #t1 in x) {
       this.key = #t1;
       core::print(this.key);
     }
-    for (final dynamic #t2 in x) {
-      let final dynamic #t3 = #t2 in invalid-expression;
+    for (final dynamic #t2 = throw new core::_CompileTimeError::•("pkg/front_end/test/fasta/rasta/unresolved_for_in.dart:14:10: \u0027[31mError: Expected lvalue, but got Instance of 'SourceClassBuilder'\u0027[0m") in x) {
       core::print(self::Fisk);
     }
-    for (final dynamic #t4 in x) {
-      let final dynamic #t5 = #t4 in invalid-expression;
-      core::print(invalid-expression);
+    for (final dynamic #t3 = throw new core::_CompileTimeError::•("pkg/front_end/test/fasta/rasta/unresolved_for_in.dart:17:10: \u0027[31mError: Expected lvalue, but got Instance of 'PrefixBuilder'\u0027[0m") in x) {
+      core::print(throw new core::_CompileTimeError::•("pkg/front_end/test/fasta/rasta/unresolved_for_in.dart: \u0027[31mError: A library can't be used as an expression.\u0027[0m"));
     }
-    for (final dynamic #t6 in x) {
-      let final dynamic #t7 = #t6 in invalid-expression;
+    for (final dynamic #t4 = throw new core::_CompileTimeError::•("pkg/front_end/test/fasta/rasta/unresolved_for_in.dart:20:10: \u0027[31mError: Expected lvalue, but got Instance of 'KernelFunctionTypeAliasBuilder'\u0027[0m") in x) {
       core::print(() → void);
     }
-    for (final dynamic #t8 in x) {
-      let final dynamic #t9 = #t8 in invalid-expression;
+    for (final dynamic #t5 = throw new core::_CompileTimeError::•("pkg/front_end/test/fasta/rasta/unresolved_for_in.dart:23:10: \u0027[31mError: Expected lvalue, but got 1\u0027[0m") in x) {
       core::print(this.key);
     }
   }
 }
 static method main(dynamic arguments) → dynamic {
   new self::Fisk::•();
-  for (final dynamic #t10 in arguments) {
-    let final dynamic #t11 = #t10 in invalid-expression;
-    core::print(throw core::_genericNoSuchMethod(null, #key, <dynamic>[], <dynamic, dynamic>{}, null));
+  for (final dynamic #t6 = throw new core::_CompileTimeError::•("pkg/front_end/test/fasta/rasta/unresolved_for_in.dart:31:8: \u0027[31mError: Expected lvalue, but got unresolved-identifier(key)\u0027[0m") in arguments) {
+    core::print(throw new core::NoSuchMethodError::•(null, #key, <dynamic>[], <dynamic, dynamic>{}, null));
   }
-  for (final dynamic #t12 in arguments) {
-    let final dynamic #t13 = #t12 in invalid-expression;
+  for (final dynamic #t7 = throw new core::_CompileTimeError::•("pkg/front_end/test/fasta/rasta/unresolved_for_in.dart:34:8: \u0027[31mError: Expected lvalue, but got Instance of 'SourceClassBuilder'\u0027[0m") in arguments) {
     core::print(self::Fisk);
   }
-  for (final dynamic #t14 in arguments) {
-    let final dynamic #t15 = #t14 in invalid-expression;
-    core::print(invalid-expression);
+  for (final dynamic #t8 = throw new core::_CompileTimeError::•("pkg/front_end/test/fasta/rasta/unresolved_for_in.dart:37:8: \u0027[31mError: Expected lvalue, but got Instance of 'PrefixBuilder'\u0027[0m") in arguments) {
+    core::print(throw new core::_CompileTimeError::•("pkg/front_end/test/fasta/rasta/unresolved_for_in.dart: \u0027[31mError: A library can't be used as an expression.\u0027[0m"));
   }
-  for (final dynamic #t16 in arguments) {
-    let final dynamic #t17 = #t16 in invalid-expression;
+  for (final dynamic #t9 = throw new core::_CompileTimeError::•("pkg/front_end/test/fasta/rasta/unresolved_for_in.dart:40:8: \u0027[31mError: Expected lvalue, but got Instance of 'KernelFunctionTypeAliasBuilder'\u0027[0m") in arguments) {
     core::print(() → void);
   }
-  for (final dynamic #t18 in arguments) {
-    let final dynamic #t19 = #t18 in invalid-expression;
-    core::print(throw core::_genericNoSuchMethod(null, #key, <dynamic>[], <dynamic, dynamic>{}, null));
+  for (final dynamic #t10 = throw new core::_CompileTimeError::•("pkg/front_end/test/fasta/rasta/unresolved_for_in.dart:43:8: \u0027[31mError: Expected lvalue, but got 1\u0027[0m") in arguments) {
+    core::print(throw new core::NoSuchMethodError::•(null, #key, <dynamic>[], <dynamic, dynamic>{}, null));
   }
 }