Rename analyzer_experimental to analyzer.

pkg/analyzer/lib/src/generated/utilities_general.dart

 // This code was auto-generated, is not intended to be edited, and is subject to
 // significant change. Please see the README file for more information.
 library engine.utilities.general;
 import 'java_core.dart';
 /**
  * Helper for measuring how much time is spent doing some operation.
  */
 class TimeCounter {
   int result = 0;
 
@@ skipping 14 matching lines @@
 
   /**
    * Stops counting time and updates counter.
    */
   void stop() {
     {
       TimeCounter_this.result += JavaSystem.currentTimeMillis() - _startTime;
     }
   }
 }