Don't include *.yaml files in 'analysis.analyzedFiles' notification.

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

 // Copyright (c) 2014, 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.
 
 import 'dart:async';
 
 import 'package:analysis_server/src/analysis_server.dart';
 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';
@@ skipping 49 matching lines @@
     }
   }
 }
 
 void sendAnalysisNotificationAnalyzedFiles(AnalysisServer server) {
   _sendNotification(server, () {
     Set<String> analyzedFiles = server.driverMap.values
         .map((driver) => driver.knownFiles)
         .expand((files) => files)
         .toSet();
+
+    // Exclude *.yaml files because IDEA Dart plugin attempts to index
+    // all the files in folders which contain analyzed files.
+    analyzedFiles.removeWhere((file) => file.endsWith('.yaml'));
+
     Set<String> prevAnalyzedFiles = server.prevAnalyzedFiles;
     if (prevAnalyzedFiles != null &&
         prevAnalyzedFiles.length == analyzedFiles.length &&
         prevAnalyzedFiles.difference(analyzedFiles).isEmpty) {
       // No change to the set of analyzed files.  No need to send another
       // notification.
       return;
     }
     server.prevAnalyzedFiles = analyzedFiles;
     protocol.AnalysisAnalyzedFilesParams params =
@@ skipping 77 matching lines @@
 void _sendNotification(AnalysisServer server, f()) {
   ServerPerformanceStatistics.notices.makeCurrentWhile(() {
     try {
       f();
     } catch (exception, stackTrace) {
       server.sendServerErrorNotification(
           'Failed to send notification', exception, stackTrace);
     }
   });
 }