Merge CommonElements and BackendHelpers!

pkg/compiler/lib/src/js_backend/annotations.dart

 // Copyright (c) 2017, 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.
 
 library js_backend.backend.annotations;
 
 import '../common.dart';
 import '../compiler.dart' show Compiler;
 import '../constants/values.dart';
 import '../elements/elements.dart';
@@ skipping 31 matching lines @@
       }
     }
   }
 
   /// Returns `true` if inlining is disabled for [element].
   bool noInline(Element element) {
     if (_hasAnnotation(element, expectNoInlineClass)) {
       // TODO(floitsch): restrict to elements from the test directory.
       return true;
     }
-    return _hasAnnotation(element, backend.helpers.noInlineClass);
+    return _hasAnnotation(element, compiler.commonElements.noInlineClass);
   }
 
   /// Returns `true` if parameter and returns types should be trusted for
   /// [element].
   bool trustTypeAnnotations(Element element) {
     return _hasAnnotation(element, expectTrustTypeAnnotationsClass);
   }
 
   /// Returns `true` if inference of parameter types is disabled for [element].
   bool assumeDynamic(Element element) {
@@ skipping 13 matching lines @@
           ConstructedConstantValue constructedConstant = value;
           if (constructedConstant.type.element == annotationClass) {
             return true;
           }
         }
       }
       return false;
     });
   }
 }