Clean up package imports and library names

pkg/analyzer/lib/src/util/utilities_timing.dart

 // Copyright (c) 2014, 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 engine.utilities.timing;
+library analyzer.src.util.utilities_timing;
 
 /**
  * A `CountedStopwatch` is a [Stopwatch] that counts the number of times the
  * stop method has been invoked.
  */
 class CountedStopwatch extends Stopwatch {
   /**
    * The number of times the [stop] method has been invoked.
    */
   int stopCount = 0;
@@ skipping 14 matching lines @@
     super.reset();
     stopCount = 0;
   }
 
   @override
   void stop() {
     super.stop();
     stopCount++;
   }
 }