anchor.diff:        new Map<Element, Element>();
   
     /**
  -   * Maps a name to elements in the universe that have that name.
  -   */
  -  final Map<SourceString, Set<Element>> methodCache =
  -      new Map<SourceString, Set<Element>>();
  -
  -  /**
      * Maps an element to the number of times this type inferrer
      * analyzed it.
      */
  
positive.code:         interestingTypes++;
        }
      });
      compiler.log('Type inferrer spent ${memberWatch.elapsedMilliseconds} ms '
                   'computing a call graph.');
      compiler.log('Type inferrer re-analyzed methods $recompiles times '
                   'in ${recomputeWatch.elapsedMilliseconds} ms.');
      compiler.log('Type inferrer found $interestingTypes interesting '
  
negative.code: 
    final Compiler compiler;
  
    // Times the computation of re-analysis of methods.
    final Stopwatch recomputeWatch = new Stopwatch();
    // Number of re-analysis.
  