All strong mode cleaning of dart2js.

tests/compiler/dart2js/sourcemaps/data/invokes_test_file.dart

Index: tests/compiler/dart2js/sourcemaps/data/invokes_test_file.dart
diff --git a/tests/compiler/dart2js/sourcemaps/data/invokes_test_file.dart b/tests/compiler/dart2js/sourcemaps/data/invokes_test_file.dart
index be230b5c11cb35f48b719183bc05592ae691b9ed..c1526eee76b9c49544df3d5844305bd41f3ef7a5 100644
--- a/tests/compiler/dart2js/sourcemaps/data/invokes_test_file.dart
+++ b/tests/compiler/dart2js/sourcemaps/data/invokes_test_file.dart
@@ -45,7 +45,7 @@ toplevelFunction() {
   counter++;
 }
 
-var toplevelField = () {
+dynamic toplevelField = () {
   counter++;
 };
 
@@ -66,7 +66,7 @@ class B {
     counter++;
   }
 
-  var superField = () {
+  dynamic superField = () {
     counter++;
   };
 
@@ -82,7 +82,7 @@ class C<T> extends B {
     counter++;
   }
 
-  static var staticField = () {
+  static dynamic staticField = () {
     counter++;
   };
 
@@ -98,7 +98,7 @@ class C<T> extends B {
     counter++;
   }
 
-  var instanceField = () {
+  dynamic instanceField = () {
     counter++;
   };