Send notifications using separate server operations.

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

Index: pkg/analysis_server/lib/src/operation/operation_queue.dart
diff --git a/pkg/analysis_server/lib/src/operation/operation_queue.dart b/pkg/analysis_server/lib/src/operation/operation_queue.dart
index b26c677f60e2d6d7479d42c899f2cdfc2fd0f491..6ef1b84fd35fb243d761479ac6626f36faebc8e1 100644
--- a/pkg/analysis_server/lib/src/operation/operation_queue.dart
+++ b/pkg/analysis_server/lib/src/operation/operation_queue.dart
@@ -8,21 +8,15 @@ import 'dart:collection';
 
 import 'package:analysis_server/src/analysis_server.dart';
 import 'package:analysis_server/src/operation/operation.dart';
-import 'package:analysis_server/src/operation/operation_analysis.dart';
 
 
 /**
  * A queue of operations in an [AnalysisServer].
  */
 class ServerOperationQueue {
-  final List<ServerOperationPriority> _analysisPriorities = [
-      ServerOperationPriority.ANALYSIS_CONTINUE,
-      ServerOperationPriority.ANALYSIS];
-
-  final AnalysisServer _server;
   final List<Queue<ServerOperation>> _queues = <Queue<ServerOperation>>[];
 
-  ServerOperationQueue(this._server) {
+  ServerOperationQueue() {
     for (int i = 0; i < ServerOperationPriority.COUNT; i++) {
       var queue = new DoubleLinkedQueue<ServerOperation>();
       _queues.add(queue);
@@ -60,23 +54,11 @@ class ServerOperationQueue {
    * Returns the next operation to perform or `null` if empty.
    */
   ServerOperation take() {
-    // try to find a priority analysis operarion
-    for (ServerOperationPriority priority in _analysisPriorities) {
-      Queue<ServerOperation> queue = _queues[priority.ordinal];
-      for (PerformAnalysisOperation operation in queue) {
-        if (_server.isPriorityContext(operation.context)) {
-          queue.remove(operation);
-          return operation;
-        }
-      }
-    }
-    // non-priority operations
     for (Queue<ServerOperation> queue in _queues) {
       if (!queue.isEmpty) {
         return queue.removeFirst();
       }
     }
-    // empty
     return null;
   }
 }