[dart2js] Fix some compilation errors in dart2js/native.

Change-Id: Idb614189a31ceaeb53a9acb1f23f0ff3f46eb9c4
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/150666
Reviewed-by: Stephen Adams <sra@google.com>
Commit-Queue: Joshua Litt <joshualitt@google.com>

tests/dart2js/native/field_type2_test.dart

@@ -9,7 +9,7 @@ import 'native_testing.dart';
 
 @Native("Node")
 class Node {
-  final parentNode;
+  get parentNode native;
 }
 
 makeNode(parent) native;

tests/dart2js/native/field_type_test.dart

@@ -10,7 +10,7 @@ import "native_testing.dart";
 
 @Native("Node")
 class Node {
-  final Node parentNode;
+  Node get parentNode native;
 
   ModelSource _modelSource; // If null, inherited from parent.
 

tests/dart2js/native/native_exceptions1_frog_test.dart

@@ -20,7 +20,7 @@ import 'native_testing.dart';
 class E {
   E._used() native; // Bogus native constructor, called only from fake body.
 
-  final int code;
+  int get code native;
 }
 
 // Type with exception-throwing methods.

tests/dart2js/native/native_mixin_with_plain_test.dart

@@ -9,7 +9,7 @@ import "native_testing.dart";
 
 @Native("A")
 class A {
-  final String aa;
+  String get aa native;
   foo() => "A-foo $aa";
   baz() => "A-baz $aa";
 }

tests/dart2js/native/native_window1_frog_test.dart

@@ -5,14 +5,14 @@
 import "native_testing.dart";
 
 abstract class Window {
-  final int document;
+  int get document native;
 }
 
 // Defining this global object makes Frog eager on optimizing
 // call sites where the receiver is typed 'Window'.
 @Native("@*DOMWindow")
 class _DOMWindowJs implements Window {
-  final int document;
+  int get document native;
 }
 
 class Win implements Window {

tests/dart2js/native/native_window2_frog_test.dart

@@ -5,14 +5,14 @@
 import "native_testing.dart";
 
 abstract class Window {
-  final int document;
+  int get document native;
 }
 
 // Defining this global object makes Frog eager on optimizing
 // call sites where the receiver is typed 'Window'.
 @Native("@*DOMWindow")
 class _DOMWindowJs implements Window {
-  final int document;
+  int get document native;
 }
 
 class Win implements Window {

tests/dart2js/native/subclassing_constructor_1_test.dart

@@ -17,8 +17,8 @@ var log;
 @Native("A")
 class A {
   final a1 = log(101); // Only initialized IF named constructor called.
-  final a2; // Initialized by native constructor.
-  final a3; // Initialized only by A.two.
+  get a2 native; // Initialized by native constructor.
+  var a3; // Initialized only by A.two.
   var a4 = log(104);
 
   A.one();
@@ -37,7 +37,7 @@ class A {
 }
 
 class B extends A {
-  final b1;
+  var b1;
   final b2 = log(202);
   var b3;
 

tests/dart2js_2/native/field_type2_test.dart

@@ -11,7 +11,7 @@ import 'native_testing.dart';
 
 @Native("Node")
 class Node {
-  final parentNode;
+  get parentNode native;
 }
 
 makeNode(parent) native;

tests/dart2js_2/native/field_type_test.dart

@@ -12,7 +12,7 @@ import "native_testing.dart";
 
 @Native("Node")
 class Node {
-  final Node parentNode;
+  Node get parentNode native;
 
   ModelSource _modelSource; // If null, inherited from parent.
 

tests/dart2js_2/native/native_exceptions1_frog_test.dart

@@ -22,7 +22,7 @@ import 'native_testing.dart';
 class E {
   E._used() native; // Bogus native constructor, called only from fake body.
 
-  final int code;
+  int get code native;
 }
 
 // Type with exception-throwing methods.

tests/dart2js_2/native/native_mixin_with_plain_test.dart

@@ -11,7 +11,7 @@ import "native_testing.dart";
 
 @Native("A")
 class A {
-  final String aa;
+  String get aa native;
   foo() => "A-foo $aa";
   baz() => "A-baz $aa";
 }

tests/dart2js_2/native/native_window1_frog_test.dart

@@ -7,14 +7,14 @@
 import "native_testing.dart";
 
 abstract class Window {
-  final int document;
+  int get document native;
 }
 
 // Defining this global object makes Frog eager on optimizing
 // call sites where the receiver is typed 'Window'.
 @Native("@*DOMWindow")
 class _DOMWindowJs implements Window {
-  final int document;
+  int get document native;
 }
 
 class Win implements Window {

tests/dart2js_2/native/native_window2_frog_test.dart

@@ -7,14 +7,14 @@
 import "native_testing.dart";
 
 abstract class Window {
-  final int document;
+  int get document native;
 }
 
 // Defining this global object makes Frog eager on optimizing
 // call sites where the receiver is typed 'Window'.
 @Native("@*DOMWindow")
 class _DOMWindowJs implements Window {
-  final int document;
+  int get document native;
 }
 
 class Win implements Window {

tests/dart2js_2/native/subclassing_constructor_1_test.dart

@@ -19,8 +19,8 @@ var log;
 @Native("A")
 class A {
   final a1 = log(101); // Only initialized IF named constructor called.
-  final a2; // Initialized by native constructor.
-  final a3; // Initialized only by A.two.
+  get a2 native; // Initialized by native constructor.
+  var a3; // Initialized only by A.two.
   var a4 = log(104);
 
   A.one();
@@ -39,7 +39,7 @@ class A {
 }
 
 class B extends A {
-  final b1;
+  var b1;
   final b2 = log(202);
   var b3;