Rename NavigationHolder to NavigationCollector.

pkg/analysis_server/lib/src/operation/operation_analysis.dart

Index: pkg/analysis_server/lib/src/operation/operation_analysis.dart
diff --git a/pkg/analysis_server/lib/src/operation/operation_analysis.dart b/pkg/analysis_server/lib/src/operation/operation_analysis.dart
index 4d1e60e8ad1e30d7fa2cda17f0c62ad254589409..5cc1dadff801aec076b914d29356181e1cd5d9fd 100644
--- a/pkg/analysis_server/lib/src/operation/operation_analysis.dart
+++ b/pkg/analysis_server/lib/src/operation/operation_analysis.dart
@@ -169,11 +169,11 @@ void sendAnalysisNotificationHighlights(
 void sendAnalysisNotificationNavigation(
     AnalysisServer server, AnalysisContext context, Source source) {
   _sendNotification(server, () {
-    NavigationHolderImpl holder =
+    NavigationCollectorImpl collector =
         computeNavigation(server, context, source, null, null);
     String file = source.fullName;
     var params = new protocol.AnalysisNavigationParams(
-        file, holder.regions, holder.targets, holder.files);
+        file, collector.regions, collector.targets, collector.files);
     server.sendNotification(params.toNotification());
   });
 }