Revert "Flush AST results for source outside of the analysis roots."

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 3263d2b6923a31e1a338211bbb836b858b80dd64..b99cec3c962d6f50e1e93839a4db7e6a9c494e40 100644
--- a/pkg/analysis_server/lib/src/operation/operation_analysis.dart
+++ b/pkg/analysis_server/lib/src/operation/operation_analysis.dart
@@ -9,7 +9,6 @@ import 'package:analysis_server/src/computer/computer_highlights.dart';
 import 'package:analysis_server/src/computer/computer_highlights2.dart';
 import 'package:analysis_server/src/computer/computer_outline.dart';
 import 'package:analysis_server/src/computer/computer_overrides.dart';
-import 'package:analysis_server/src/context_manager.dart';
 import 'package:analysis_server/src/domains/analysis/implemented_dart.dart';
 import 'package:analysis_server/src/domains/analysis/navigation.dart';
 import 'package:analysis_server/src/domains/analysis/occurrences.dart';
@@ -22,8 +21,6 @@ import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/error.dart';
 import 'package:analyzer/src/generated/source.dart';
-import 'package:analyzer/task/dart.dart';
-import 'package:analyzer/task/model.dart';
 
 /**
  * Runs the given function [f] with the working cache size in [context].
@@ -379,7 +376,6 @@ class PerformAnalysisOperation extends ServerOperation {
       setCacheSize(context, IDLE_CACHE_SIZE);
       server.sendContextAnalysisDoneNotifications(
           context, AnalysisDoneReason.COMPLETE);
-      _flushCache(server);
       return;
     }
     // process results
@@ -392,28 +388,6 @@ class PerformAnalysisOperation extends ServerOperation {
   }
 
   /**
-   * Flush some of the [context] cache results, which we probably not
-   * going to use anymore.
-   */
-  void _flushCache(AnalysisServer server) {
-    if (context is InternalAnalysisContext) {
-      InternalAnalysisContext context = this.context;
-      // Flush AST results for source outside of the analysis roots.
-      ContextManager contextManager = server.contextManager;
-      context.analysisCache.flush((target) {
-        if (target is Source || target is LibrarySpecificUnit) {
-          Source targetSource = target.source;
-          return !context.prioritySources.contains(targetSource) &&
-              !contextManager.isInAnalysisRoot(targetSource.fullName);
-        }
-        return false;
-      }, (target, result) {
-        return result is ResultDescriptor<CompilationUnit>;
-      });
-    }
-  }
-
-  /**
    * Send the information in the given list of notices back to the client.
    */
   void _sendNotices(AnalysisServer server, List<ChangeNotice> notices) {