Revert "Avoid getInterceptor calls in cases were the interceptor would be constant if it were not `…

tests/compiler/dart2js/interceptor_almost_constant_test.dart

-// Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-import 'dart:async';
-import 'package:expect/expect.dart';
-import 'package:async_helper/async_helper.dart';
-import 'compiler_helper.dart';
-
-const String TEST_ONE = r"""
-  foo(b) {
-    var a = b ? [1,2,3] : null;
-    print(a.first);
-  }
-""";
-
-main() {
-  asyncTest(() => Future.wait([
-    // Check that almost-constant interceptor is used.
-    compile(TEST_ONE, entry: 'foo', check: (String generated) {
-      String re = r'a && [\w\.]*_methods';
-      Expect.isTrue(generated.contains(new RegExp(re)), 'contains /$re/');
-    })
-  ]));
-}