Address review comments from https://chromiumcodereview.appspot.com/10542073/

dart/lib/compiler/implementation/compiler.dart

 // Copyright (c) 2012, 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.
 
 
 /**
  * If true, print a warning for each method that was resolved, but not
  * compiled.
  */
 final bool REPORT_EXCESS_RESOLUTION = false;
@@ skipping 414 matching lines @@
       withCurrentElement(work.element, () => work.run(this, world));
     });
     world.queueIsClosed = true;
     assert(world.checkNoEnqueuedInvokedInstanceMethods());
     world.registerFieldClosureInvocations();
   }
 
   /**
    * Perform various checks of the queues. This includes checking that
    * the queues are empty (nothing was added after we stopped
-   * processing the quese). Also compute the number of methods that
+   * processing the queues). Also compute the number of methods that
    * were resolved, but not compiled (aka excess resolution).
    */
   checkQueues() {
     for (var world in [enqueuer.resolution, enqueuer.codegen]) {
       world.forEach((WorkItem work) {
         internalErrorOnElement(work.element, "Work list is not empty.");
       });
     }
     var resolved = new Set.from(enqueuer.resolution.resolvedElements.getKeys());
     for (Element e in codegenWorld.generatedCode.getKeys()) {
@@ skipping 25 matching lines @@
     if (!REPORT_EXCESS_RESOLUTION) return;
     for (Element e in resolved) {
       SourceSpan span = spanFromElement(e);
       reportDiagnostic(span, 'Warning: $e resolved but not compiled.', false);
     }
   }
 
   TreeElements analyzeElement(Element element) {
     TreeElements elements = enqueuer.resolution.getCachedElements(element);
     if (elements !== null) return elements;
-    if (element is AbstractFieldElement) {
-      return null;
-    }
     final int allowed = ElementCategory.VARIABLE | ElementCategory.FUNCTION
                         | ElementCategory.FACTORY;
-    if (!element.isAccessor() && (element.kind.category & allowed) == 0) {
+    ElementKind kind = element.kind;
+    if (!element.isAccessor() &&
+        ((kind === ElementKind.ABSTRACT_FIELD) ||
+         (kind.category & allowed) == 0)) {
       return null;
     }
     assert(parser !== null);
     Node tree = parser.parse(element);
     validator.validate(tree);
     unparseValidator.check(element);
     elements = resolver.resolve(element);
     checker.check(tree, elements);
     return elements;
   }
@@ skipping 204 matching lines @@
     // invariant that endOffset > beginOffset, but for EOF the
     // charoffset of the next token may be [beginOffset]. This can
     // also happen for synthetized tokens that are produced during
     // error handling.
     final endOffset =
       Math.max((end.next !== null) ? end.next.charOffset : 0, beginOffset + 1);
     assert(endOffset > beginOffset);
     return f(beginOffset, endOffset);
   }
 }