All strong mode cleaning of dart2js.

tests/compiler/dart2js/gvn_dynamic_field_get_test.dart

Index: tests/compiler/dart2js/gvn_dynamic_field_get_test.dart
diff --git a/tests/compiler/dart2js/gvn_dynamic_field_get_test.dart b/tests/compiler/dart2js/gvn_dynamic_field_get_test.dart
index 25af24aa7c79548429ce8afab39b30900e9d2309..d7c0becff2718b06fd94a7629d001fc3650d059e 100644
--- a/tests/compiler/dart2js/gvn_dynamic_field_get_test.dart
+++ b/tests/compiler/dart2js/gvn_dynamic_field_get_test.dart
@@ -25,13 +25,13 @@ main() {
 
 main() {
   Uri uri = new Uri(scheme: 'source');
-  var compiler = compilerFor(TEST, uri);
+  dynamic compiler = compilerFor(TEST, uri);
   asyncTest(() => compiler.run(uri).then((_) {
         String generated = compiler.assembledCode;
         RegExp regexp = new RegExp(r"get\$foo");
         Iterator matches = regexp.allMatches(generated).iterator;
         checkNumberOfMatches(matches, 1);
-        var cls = findElement(compiler, 'A');
+        dynamic cls = findElement(compiler, 'A');
         Expect.isNotNull(cls);
         String name = 'foo';
         var element = cls.lookupLocalMember(name);