More strong mode changes to analysis_server

pkg/analysis_server/benchmark/integration/operation.dart

 // Copyright (c) 2015, 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.
 
 library server.operation;
 
 import 'dart:async';
 
 import 'package:analysis_server/plugin/protocol/protocol.dart';
 import 'package:logging/logging.dart';
@@ skipping 73 matching lines @@
     driver.logger.log(Level.FINE, 'Sending request: $method\n  $json');
     stopwatch.start();
 
     void recordResult(bool success, result) {
       Duration elapsed = stopwatch.elapsed;
       driver.results.record(method, elapsed, success: success);
       driver.logger
           .log(Level.FINE, 'Response received: $method : $elapsed\n  $result');
     }
 
-    driver.send(method, json['params']).then((Map<String, dynamic> result) {
+    driver
+        .send(method, converter.asMap(json['params']))
+        .then((Map<String, dynamic> result) {
       recordResult(true, result);
       processResult(originalId, result, stopwatch);
     }).catchError((exception) {
       recordResult(false, exception);
       converter.processErrorResponse(originalId, exception);
     });
     return null;
   }
 
   void processResult(
@@ skipping 121 matching lines @@
         subscription.cancel();
         timer.cancel();
         String message = 'gave up waiting for analysis to complete';
         driver.logger.log(Level.WARNING, message);
         completer.completeError(message);
       }
     });
     return completer.future;
   }
 }