Rename analyzer_experimental to analyzer.

pkg/analyzer/lib/src/generated/source.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.source;
 import 'java_core.dart';
 import 'sdk.dart' show DartSdk;
 import 'engine.dart' show AnalysisContext;
 /**
  * Instances of the class `SourceFactory` resolve possibly relative URI's against an existing
  * [Source].
  *
@@ skipping 789 matching lines @@
   String setContents(Source source, String contents) {
     if (contents == null) {
       _stampMap.remove(source);
       return _contentMap.remove(source);
     } else {
       _stampMap[source] = JavaSystem.currentTimeMillis();
       return javaMapPut(_contentMap, source, contents);
     }
   }
 }