Add OCCURRENCES_CONTRIBUTOR_EXTENSION_POINT_ID.

pkg/analysis_server/lib/analysis/navigation_core.dart

 // Copyright (c) 2015, 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 analysis_server.analysis.navigation.navigation_core;
+library analysis_server.analysis.navigation_core;

[Brian Wilkerson, 2015/09/11 20:26:24]

I would prefer to leave this file nested. Is there a reason for moving it?

 
 import 'package:analysis_server/src/protocol.dart'
     show ElementKind, Location, NavigationRegion, NavigationTarget;
 import 'package:analyzer/src/generated/engine.dart' show AnalysisContext;
 import 'package:analyzer/src/generated/source.dart' show Source;
 
 /**
  * An object used to produce navigation regions.
  *
  * Clients are expected to subtype this class when implementing plugins.
@@ skipping 15 matching lines @@
  * Clients are not expected to subtype this class.
  */
 abstract class NavigationCollector {
   /**
    * Record a new navigation region with the given [offset] and [length] that
    * should navigation to the given [targetLocation].
    */
   void addRegion(
       int offset, int length, ElementKind targetKind, Location targetLocation);
 }