Add support for three more plugin requests

pkg/analysis_server/test/analysis_abstract.dart

Index: pkg/analysis_server/test/analysis_abstract.dart
diff --git a/pkg/analysis_server/test/analysis_abstract.dart b/pkg/analysis_server/test/analysis_abstract.dart
index d0c918d1656d1f32d95612b45d32c50a854feb3a..c037b95d8fa1edade6c36efd75db71febc8b8467 100644
--- a/pkg/analysis_server/test/analysis_abstract.dart
+++ b/pkg/analysis_server/test/analysis_abstract.dart
@@ -22,6 +22,7 @@ import 'package:analyzer/src/dart/analysis/driver.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/sdk.dart';
 import 'package:analyzer_plugin/protocol/protocol.dart' as plugin;
+import 'package:analyzer_plugin/protocol/protocol_generated.dart' as plugin;
 import 'package:analyzer_plugin/src/protocol/protocol_internal.dart' as plugin;
 import 'package:plugin/manager.dart';
 import 'package:plugin/plugin.dart';
@@ -270,6 +271,9 @@ class AbstractAnalysisTest {
  * hard-coding the responses.
  */
 class TestPluginManager implements PluginManager {
+  plugin.AnalysisSetPriorityFilesParams analysisSetPriorityFilesParams;
+  plugin.AnalysisSetSubscriptionsParams analysisSetSubscriptionsParams;
+  plugin.AnalysisUpdateContentParams analysisUpdateContentParams;
   Map<PluginInfo, Future<plugin.Response>> broadcastResults;
 
   @override
@@ -321,6 +325,24 @@ class TestPluginManager implements PluginManager {
   }
 
   @override
+  void setAnalysisSetPriorityFilesParams(
+      plugin.AnalysisSetPriorityFilesParams params) {
+    analysisSetPriorityFilesParams = params;
+  }
+
+  @override
+  void setAnalysisSetSubscriptionsParams(
+      plugin.AnalysisSetSubscriptionsParams params) {
+    analysisSetSubscriptionsParams = params;
+  }
+
+  @override
+  void setAnalysisUpdateContentParams(
+      plugin.AnalysisUpdateContentParams params) {
+    analysisUpdateContentParams = params;
+  }
+
+  @override
   Future<List<Null>> stopAll() async {
     fail('Unexpected invocation of stopAll');
     return null;