Rename analyzer_experimental to analyzer.

pkg/analyzer/lib/src/generated/instrumentation.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.instrumentation;
 import 'java_core.dart';
 /**
  * The class `Instrumentation` implements support for logging instrumentation information.
  *
  * Instrumentation information consists of information about specific operations. Those operations
  * can range from user-facing operations, such as saving the changes to a file, to internal
  * operations, such as tokenizing source code. The information to be logged is gathered by
@@ skipping 274 matching lines @@
 
   /**
    * Create a builder that can collect the data associated with an operation identified by the given
    * name.
    *
    * @param name the name used to uniquely identify the operation
    * @return the builder that was created
    */
   InstrumentationBuilder createBuilder(String name);
 }