| Index: mojo/dart/packages/mojo_services/lib/mojo/ui/view_associates.mojom.dart
 | 
| diff --git a/mojo/dart/packages/mojo_services/lib/mojo/ui/view_associates.mojom.dart b/mojo/dart/packages/mojo_services/lib/mojo/ui/view_associates.mojom.dart
 | 
| index 15ce96b0f92c978f53942faae14ead7c63c40abe..8d9454753d5cbbbc74d861a0e14d034555adb2c4 100644
 | 
| --- a/mojo/dart/packages/mojo_services/lib/mojo/ui/view_associates.mojom.dart
 | 
| +++ b/mojo/dart/packages/mojo_services/lib/mojo/ui/view_associates.mojom.dart
 | 
| @@ -22,6 +22,11 @@ class ViewAssociateInfo extends bindings.Struct {
 | 
|  
 | 
|    ViewAssociateInfo() : super(kVersions.last.size);
 | 
|  
 | 
| +  ViewAssociateInfo.init(
 | 
| +    List<String> this.viewServiceNames, 
 | 
| +    List<String> this.viewTreeServiceNames
 | 
| +  ) : super(kVersions.last.size);
 | 
| +
 | 
|    static ViewAssociateInfo deserialize(bindings.Message message) {
 | 
|      var decoder = new bindings.Decoder(message);
 | 
|      var result = decode(decoder);
 | 
| @@ -141,6 +146,10 @@ class _ViewAssociateConnectParams extends bindings.Struct {
 | 
|  
 | 
|    _ViewAssociateConnectParams() : super(kVersions.last.size);
 | 
|  
 | 
| +  _ViewAssociateConnectParams.init(
 | 
| +    ViewInspectorInterface this.inspector
 | 
| +  ) : super(kVersions.last.size);
 | 
| +
 | 
|    static _ViewAssociateConnectParams deserialize(bindings.Message message) {
 | 
|      var decoder = new bindings.Decoder(message);
 | 
|      var result = decode(decoder);
 | 
| @@ -212,6 +221,10 @@ class ViewAssociateConnectResponseParams extends bindings.Struct {
 | 
|  
 | 
|    ViewAssociateConnectResponseParams() : super(kVersions.last.size);
 | 
|  
 | 
| +  ViewAssociateConnectResponseParams.init(
 | 
| +    ViewAssociateInfo this.info
 | 
| +  ) : super(kVersions.last.size);
 | 
| +
 | 
|    static ViewAssociateConnectResponseParams deserialize(bindings.Message message) {
 | 
|      var decoder = new bindings.Decoder(message);
 | 
|      var result = decode(decoder);
 | 
| @@ -287,6 +300,12 @@ class _ViewAssociateConnectToViewServiceParams extends bindings.Struct {
 | 
|  
 | 
|    _ViewAssociateConnectToViewServiceParams() : super(kVersions.last.size);
 | 
|  
 | 
| +  _ViewAssociateConnectToViewServiceParams.init(
 | 
| +    view_token_mojom.ViewToken this.viewToken, 
 | 
| +    String this.serviceName_, 
 | 
| +    core.MojoMessagePipeEndpoint this.pipe
 | 
| +  ) : super(kVersions.last.size);
 | 
| +
 | 
|    static _ViewAssociateConnectToViewServiceParams deserialize(bindings.Message message) {
 | 
|      var decoder = new bindings.Decoder(message);
 | 
|      var result = decode(decoder);
 | 
| @@ -385,6 +404,12 @@ class _ViewAssociateConnectToViewTreeServiceParams extends bindings.Struct {
 | 
|  
 | 
|    _ViewAssociateConnectToViewTreeServiceParams() : super(kVersions.last.size);
 | 
|  
 | 
| +  _ViewAssociateConnectToViewTreeServiceParams.init(
 | 
| +    view_tree_token_mojom.ViewTreeToken this.viewTreeToken, 
 | 
| +    String this.serviceName_, 
 | 
| +    core.MojoMessagePipeEndpoint this.pipe
 | 
| +  ) : super(kVersions.last.size);
 | 
| +
 | 
|    static _ViewAssociateConnectToViewTreeServiceParams deserialize(bindings.Message message) {
 | 
|      var decoder = new bindings.Decoder(message);
 | 
|      var result = decode(decoder);
 | 
| @@ -482,6 +507,11 @@ class _ViewInspectorGetHitTesterParams extends bindings.Struct {
 | 
|  
 | 
|    _ViewInspectorGetHitTesterParams() : super(kVersions.last.size);
 | 
|  
 | 
| +  _ViewInspectorGetHitTesterParams.init(
 | 
| +    view_tree_token_mojom.ViewTreeToken this.viewTreeToken, 
 | 
| +    hit_tests_mojom.HitTesterInterfaceRequest this.hitTester
 | 
| +  ) : super(kVersions.last.size);
 | 
| +
 | 
|    static _ViewInspectorGetHitTesterParams deserialize(bindings.Message message) {
 | 
|      var decoder = new bindings.Decoder(message);
 | 
|      var result = decode(decoder);
 | 
| @@ -566,6 +596,10 @@ class ViewInspectorGetHitTesterResponseParams extends bindings.Struct {
 | 
|  
 | 
|    ViewInspectorGetHitTesterResponseParams() : super(kVersions.last.size);
 | 
|  
 | 
| +  ViewInspectorGetHitTesterResponseParams.init(
 | 
| +    bool this.rendererChanged
 | 
| +  ) : super(kVersions.last.size);
 | 
| +
 | 
|    static ViewInspectorGetHitTesterResponseParams deserialize(bindings.Message message) {
 | 
|      var decoder = new bindings.Decoder(message);
 | 
|      var result = decode(decoder);
 | 
| @@ -638,6 +672,10 @@ class _ViewInspectorResolveScenesParams extends bindings.Struct {
 | 
|  
 | 
|    _ViewInspectorResolveScenesParams() : super(kVersions.last.size);
 | 
|  
 | 
| +  _ViewInspectorResolveScenesParams.init(
 | 
| +    List<scene_token_mojom.SceneToken> this.sceneTokens
 | 
| +  ) : super(kVersions.last.size);
 | 
| +
 | 
|    static _ViewInspectorResolveScenesParams deserialize(bindings.Message message) {
 | 
|      var decoder = new bindings.Decoder(message);
 | 
|      var result = decode(decoder);
 | 
| @@ -726,6 +764,10 @@ class ViewInspectorResolveScenesResponseParams extends bindings.Struct {
 | 
|  
 | 
|    ViewInspectorResolveScenesResponseParams() : super(kVersions.last.size);
 | 
|  
 | 
| +  ViewInspectorResolveScenesResponseParams.init(
 | 
| +    List<view_token_mojom.ViewToken> this.viewTokens
 | 
| +  ) : super(kVersions.last.size);
 | 
| +
 | 
|    static ViewInspectorResolveScenesResponseParams deserialize(bindings.Message message) {
 | 
|      var decoder = new bindings.Decoder(message);
 | 
|      var result = decode(decoder);
 | 
| @@ -810,14 +852,17 @@ const int _viewAssociateMethodConnectToViewServiceName = 1;
 | 
|  const int _viewAssociateMethodConnectToViewTreeServiceName = 2;
 | 
|  
 | 
|  class _ViewAssociateServiceDescription implements service_describer.ServiceDescription {
 | 
| -  dynamic getTopLevelInterface([Function responseFactory]) =>
 | 
| -      responseFactory(null);
 | 
| +  void getTopLevelInterface(Function responder) {
 | 
| +    responder(null);
 | 
| +  }
 | 
|  
 | 
| -  dynamic getTypeDefinition(String typeKey, [Function responseFactory]) =>
 | 
| -      responseFactory(null);
 | 
| +  void getTypeDefinition(String typeKey, Function responder) {
 | 
| +    responder(null);
 | 
| +  }
 | 
|  
 | 
| -  dynamic getAllTypeDefinitions([Function responseFactory]) =>
 | 
| -      responseFactory(null);
 | 
| +  void getAllTypeDefinitions(Function responder) {
 | 
| +    responder(null);
 | 
| +  }
 | 
|  }
 | 
|  
 | 
|  abstract class ViewAssociate {
 | 
| @@ -842,7 +887,7 @@ abstract class ViewAssociate {
 | 
|      s.connectToService(url, p, name);
 | 
|      return p;
 | 
|    }
 | 
| -  dynamic connect(ViewInspectorInterface inspector,[Function responseFactory = null]);
 | 
| +  void connect(ViewInspectorInterface inspector,void callback(ViewAssociateInfo info));
 | 
|    void connectToViewService(view_token_mojom.ViewToken viewToken, String serviceName_, core.MojoMessagePipeEndpoint pipe);
 | 
|    void connectToViewTreeService(view_tree_token_mojom.ViewTreeToken viewTreeToken, String serviceName_, core.MojoMessagePipeEndpoint pipe);
 | 
|  }
 | 
| @@ -894,18 +939,14 @@ class _ViewAssociateProxyControl
 | 
|            proxyError("Expected a message with a valid request Id.");
 | 
|            return;
 | 
|          }
 | 
| -        Completer c = completerMap[message.header.requestId];
 | 
| -        if (c == null) {
 | 
| +        Function callback = callbackMap[message.header.requestId];
 | 
| +        if (callback == null) {
 | 
|            proxyError(
 | 
|                "Message had unknown request Id: ${message.header.requestId}");
 | 
|            return;
 | 
|          }
 | 
| -        completerMap.remove(message.header.requestId);
 | 
| -        if (c.isCompleted) {
 | 
| -          proxyError("Response completer already completed");
 | 
| -          return;
 | 
| -        }
 | 
| -        c.complete(r);
 | 
| +        callbackMap.remove(message.header.requestId);
 | 
| +        callback(r.info );
 | 
|          break;
 | 
|        default:
 | 
|          proxyError("Unexpected message type: ${message.header.type}");
 | 
| @@ -950,17 +991,19 @@ class ViewAssociateProxy
 | 
|    }
 | 
|  
 | 
|  
 | 
| -  dynamic connect(ViewInspectorInterface inspector,[Function responseFactory = null]) {
 | 
| +  void connect(ViewInspectorInterface inspector,void callback(ViewAssociateInfo info)) {
 | 
|      if (impl != null) {
 | 
| -      return new Future(() => impl.connect(inspector,_ViewAssociateStubControl._viewAssociateConnectResponseParamsFactory));
 | 
| +      impl.connect(inspector,callback);
 | 
| +      return;
 | 
|      }
 | 
|      var params = new _ViewAssociateConnectParams();
 | 
|      params.inspector = inspector;
 | 
| -    return ctrl.sendMessageWithRequestId(
 | 
| +    ctrl.sendMessageWithRequestId(
 | 
|          params,
 | 
|          _viewAssociateMethodConnectName,
 | 
|          -1,
 | 
| -        bindings.MessageHeader.kMessageExpectsResponse);
 | 
| +        bindings.MessageHeader.kMessageExpectsResponse,
 | 
| +        callback);
 | 
|    }
 | 
|    void connectToViewService(view_token_mojom.ViewToken viewToken, String serviceName_, core.MojoMessagePipeEndpoint pipe) {
 | 
|      if (impl != null) {
 | 
| @@ -1018,17 +1061,24 @@ class _ViewAssociateStubControl
 | 
|    String get serviceName => ViewAssociate.serviceName;
 | 
|  
 | 
|  
 | 
| -  static ViewAssociateConnectResponseParams _viewAssociateConnectResponseParamsFactory(ViewAssociateInfo info) {
 | 
| -    var result = new ViewAssociateConnectResponseParams();
 | 
| -    result.info = info;
 | 
| -    return result;
 | 
| +  Function _viewAssociateConnectResponseParamsResponder(
 | 
| +      int requestId) {
 | 
| +  return (ViewAssociateInfo info) {
 | 
| +      var result = new ViewAssociateConnectResponseParams();
 | 
| +      result.info = info;
 | 
| +      sendResponse(buildResponseWithId(
 | 
| +          result,
 | 
| +          _viewAssociateMethodConnectName,
 | 
| +          requestId,
 | 
| +          bindings.MessageHeader.kMessageIsResponse));
 | 
| +    };
 | 
|    }
 | 
|  
 | 
| -  dynamic handleMessage(bindings.ServiceMessage message) {
 | 
| +  void handleMessage(bindings.ServiceMessage message) {
 | 
|      if (bindings.ControlMessageHandler.isControlMessage(message)) {
 | 
| -      return bindings.ControlMessageHandler.handleMessage(this,
 | 
| -                                                          0,
 | 
| -                                                          message);
 | 
| +      bindings.ControlMessageHandler.handleMessage(
 | 
| +          this, 0, message);
 | 
| +      return;
 | 
|      }
 | 
|      if (_impl == null) {
 | 
|        throw new core.MojoApiError("$this has no implementation set");
 | 
| @@ -1037,24 +1087,7 @@ class _ViewAssociateStubControl
 | 
|        case _viewAssociateMethodConnectName:
 | 
|          var params = _ViewAssociateConnectParams.deserialize(
 | 
|              message.payload);
 | 
| -        var response = _impl.connect(params.inspector,_viewAssociateConnectResponseParamsFactory);
 | 
| -        if (response is Future) {
 | 
| -          return response.then((response) {
 | 
| -            if (response != null) {
 | 
| -              return buildResponseWithId(
 | 
| -                  response,
 | 
| -                  _viewAssociateMethodConnectName,
 | 
| -                  message.header.requestId,
 | 
| -                  bindings.MessageHeader.kMessageIsResponse);
 | 
| -            }
 | 
| -          });
 | 
| -        } else if (response != null) {
 | 
| -          return buildResponseWithId(
 | 
| -              response,
 | 
| -              _viewAssociateMethodConnectName,
 | 
| -              message.header.requestId,
 | 
| -              bindings.MessageHeader.kMessageIsResponse);
 | 
| -        }
 | 
| +        _impl.connect(params.inspector, _viewAssociateConnectResponseParamsResponder(message.header.requestId));
 | 
|          break;
 | 
|        case _viewAssociateMethodConnectToViewServiceName:
 | 
|          var params = _ViewAssociateConnectToViewServiceParams.deserialize(
 | 
| @@ -1070,7 +1103,6 @@ class _ViewAssociateStubControl
 | 
|          throw new bindings.MojoCodecError("Unexpected message name");
 | 
|          break;
 | 
|      }
 | 
| -    return null;
 | 
|    }
 | 
|  
 | 
|    ViewAssociate get impl => _impl;
 | 
| @@ -1124,8 +1156,8 @@ class ViewAssociateStub
 | 
|    }
 | 
|  
 | 
|  
 | 
| -  dynamic connect(ViewInspectorInterface inspector,[Function responseFactory = null]) {
 | 
| -    return impl.connect(inspector,responseFactory);
 | 
| +  void connect(ViewInspectorInterface inspector,void callback(ViewAssociateInfo info)) {
 | 
| +    return impl.connect(inspector,callback);
 | 
|    }
 | 
|    void connectToViewService(view_token_mojom.ViewToken viewToken, String serviceName_, core.MojoMessagePipeEndpoint pipe) {
 | 
|      return impl.connectToViewService(viewToken, serviceName_, pipe);
 | 
| @@ -1137,14 +1169,17 @@ class ViewAssociateStub
 | 
|  
 | 
|  
 | 
|  class _ViewAssociateOwnerServiceDescription implements service_describer.ServiceDescription {
 | 
| -  dynamic getTopLevelInterface([Function responseFactory]) =>
 | 
| -      responseFactory(null);
 | 
| +  void getTopLevelInterface(Function responder) {
 | 
| +    responder(null);
 | 
| +  }
 | 
|  
 | 
| -  dynamic getTypeDefinition(String typeKey, [Function responseFactory]) =>
 | 
| -      responseFactory(null);
 | 
| +  void getTypeDefinition(String typeKey, Function responder) {
 | 
| +    responder(null);
 | 
| +  }
 | 
|  
 | 
| -  dynamic getAllTypeDefinitions([Function responseFactory]) =>
 | 
| -      responseFactory(null);
 | 
| +  void getAllTypeDefinitions(Function responder) {
 | 
| +    responder(null);
 | 
| +  }
 | 
|  }
 | 
|  
 | 
|  abstract class ViewAssociateOwner {
 | 
| @@ -1279,11 +1314,11 @@ class _ViewAssociateOwnerStubControl
 | 
|  
 | 
|  
 | 
|  
 | 
| -  dynamic handleMessage(bindings.ServiceMessage message) {
 | 
| +  void handleMessage(bindings.ServiceMessage message) {
 | 
|      if (bindings.ControlMessageHandler.isControlMessage(message)) {
 | 
| -      return bindings.ControlMessageHandler.handleMessage(this,
 | 
| -                                                          0,
 | 
| -                                                          message);
 | 
| +      bindings.ControlMessageHandler.handleMessage(
 | 
| +          this, 0, message);
 | 
| +      return;
 | 
|      }
 | 
|      if (_impl == null) {
 | 
|        throw new core.MojoApiError("$this has no implementation set");
 | 
| @@ -1293,7 +1328,6 @@ class _ViewAssociateOwnerStubControl
 | 
|          throw new bindings.MojoCodecError("Unexpected message name");
 | 
|          break;
 | 
|      }
 | 
| -    return null;
 | 
|    }
 | 
|  
 | 
|    ViewAssociateOwner get impl => _impl;
 | 
| @@ -1353,14 +1387,17 @@ const int _viewInspectorMethodGetHitTesterName = 0;
 | 
|  const int _viewInspectorMethodResolveScenesName = 1;
 | 
|  
 | 
|  class _ViewInspectorServiceDescription implements service_describer.ServiceDescription {
 | 
| -  dynamic getTopLevelInterface([Function responseFactory]) =>
 | 
| -      responseFactory(null);
 | 
| +  void getTopLevelInterface(Function responder) {
 | 
| +    responder(null);
 | 
| +  }
 | 
|  
 | 
| -  dynamic getTypeDefinition(String typeKey, [Function responseFactory]) =>
 | 
| -      responseFactory(null);
 | 
| +  void getTypeDefinition(String typeKey, Function responder) {
 | 
| +    responder(null);
 | 
| +  }
 | 
|  
 | 
| -  dynamic getAllTypeDefinitions([Function responseFactory]) =>
 | 
| -      responseFactory(null);
 | 
| +  void getAllTypeDefinitions(Function responder) {
 | 
| +    responder(null);
 | 
| +  }
 | 
|  }
 | 
|  
 | 
|  abstract class ViewInspector {
 | 
| @@ -1385,8 +1422,8 @@ abstract class ViewInspector {
 | 
|      s.connectToService(url, p, name);
 | 
|      return p;
 | 
|    }
 | 
| -  dynamic getHitTester(view_tree_token_mojom.ViewTreeToken viewTreeToken,hit_tests_mojom.HitTesterInterfaceRequest hitTester,[Function responseFactory = null]);
 | 
| -  dynamic resolveScenes(List<scene_token_mojom.SceneToken> sceneTokens,[Function responseFactory = null]);
 | 
| +  void getHitTester(view_tree_token_mojom.ViewTreeToken viewTreeToken,hit_tests_mojom.HitTesterInterfaceRequest hitTester,void callback(bool rendererChanged));
 | 
| +  void resolveScenes(List<scene_token_mojom.SceneToken> sceneTokens,void callback(List<view_token_mojom.ViewToken> viewTokens));
 | 
|  }
 | 
|  
 | 
|  abstract class ViewInspectorInterface
 | 
| @@ -1436,18 +1473,14 @@ class _ViewInspectorProxyControl
 | 
|            proxyError("Expected a message with a valid request Id.");
 | 
|            return;
 | 
|          }
 | 
| -        Completer c = completerMap[message.header.requestId];
 | 
| -        if (c == null) {
 | 
| +        Function callback = callbackMap[message.header.requestId];
 | 
| +        if (callback == null) {
 | 
|            proxyError(
 | 
|                "Message had unknown request Id: ${message.header.requestId}");
 | 
|            return;
 | 
|          }
 | 
| -        completerMap.remove(message.header.requestId);
 | 
| -        if (c.isCompleted) {
 | 
| -          proxyError("Response completer already completed");
 | 
| -          return;
 | 
| -        }
 | 
| -        c.complete(r);
 | 
| +        callbackMap.remove(message.header.requestId);
 | 
| +        callback(r.rendererChanged );
 | 
|          break;
 | 
|        case _viewInspectorMethodResolveScenesName:
 | 
|          var r = ViewInspectorResolveScenesResponseParams.deserialize(
 | 
| @@ -1456,18 +1489,14 @@ class _ViewInspectorProxyControl
 | 
|            proxyError("Expected a message with a valid request Id.");
 | 
|            return;
 | 
|          }
 | 
| -        Completer c = completerMap[message.header.requestId];
 | 
| -        if (c == null) {
 | 
| +        Function callback = callbackMap[message.header.requestId];
 | 
| +        if (callback == null) {
 | 
|            proxyError(
 | 
|                "Message had unknown request Id: ${message.header.requestId}");
 | 
|            return;
 | 
|          }
 | 
| -        completerMap.remove(message.header.requestId);
 | 
| -        if (c.isCompleted) {
 | 
| -          proxyError("Response completer already completed");
 | 
| -          return;
 | 
| -        }
 | 
| -        c.complete(r);
 | 
| +        callbackMap.remove(message.header.requestId);
 | 
| +        callback(r.viewTokens );
 | 
|          break;
 | 
|        default:
 | 
|          proxyError("Unexpected message type: ${message.header.type}");
 | 
| @@ -1512,30 +1541,34 @@ class ViewInspectorProxy
 | 
|    }
 | 
|  
 | 
|  
 | 
| -  dynamic getHitTester(view_tree_token_mojom.ViewTreeToken viewTreeToken,hit_tests_mojom.HitTesterInterfaceRequest hitTester,[Function responseFactory = null]) {
 | 
| +  void getHitTester(view_tree_token_mojom.ViewTreeToken viewTreeToken,hit_tests_mojom.HitTesterInterfaceRequest hitTester,void callback(bool rendererChanged)) {
 | 
|      if (impl != null) {
 | 
| -      return new Future(() => impl.getHitTester(viewTreeToken,hitTester,_ViewInspectorStubControl._viewInspectorGetHitTesterResponseParamsFactory));
 | 
| +      impl.getHitTester(viewTreeToken,hitTester,callback);
 | 
| +      return;
 | 
|      }
 | 
|      var params = new _ViewInspectorGetHitTesterParams();
 | 
|      params.viewTreeToken = viewTreeToken;
 | 
|      params.hitTester = hitTester;
 | 
| -    return ctrl.sendMessageWithRequestId(
 | 
| +    ctrl.sendMessageWithRequestId(
 | 
|          params,
 | 
|          _viewInspectorMethodGetHitTesterName,
 | 
|          -1,
 | 
| -        bindings.MessageHeader.kMessageExpectsResponse);
 | 
| +        bindings.MessageHeader.kMessageExpectsResponse,
 | 
| +        callback);
 | 
|    }
 | 
| -  dynamic resolveScenes(List<scene_token_mojom.SceneToken> sceneTokens,[Function responseFactory = null]) {
 | 
| +  void resolveScenes(List<scene_token_mojom.SceneToken> sceneTokens,void callback(List<view_token_mojom.ViewToken> viewTokens)) {
 | 
|      if (impl != null) {
 | 
| -      return new Future(() => impl.resolveScenes(sceneTokens,_ViewInspectorStubControl._viewInspectorResolveScenesResponseParamsFactory));
 | 
| +      impl.resolveScenes(sceneTokens,callback);
 | 
| +      return;
 | 
|      }
 | 
|      var params = new _ViewInspectorResolveScenesParams();
 | 
|      params.sceneTokens = sceneTokens;
 | 
| -    return ctrl.sendMessageWithRequestId(
 | 
| +    ctrl.sendMessageWithRequestId(
 | 
|          params,
 | 
|          _viewInspectorMethodResolveScenesName,
 | 
|          -1,
 | 
| -        bindings.MessageHeader.kMessageExpectsResponse);
 | 
| +        bindings.MessageHeader.kMessageExpectsResponse,
 | 
| +        callback);
 | 
|    }
 | 
|  }
 | 
|  
 | 
| @@ -1561,22 +1594,36 @@ class _ViewInspectorStubControl
 | 
|    String get serviceName => ViewInspector.serviceName;
 | 
|  
 | 
|  
 | 
| -  static ViewInspectorGetHitTesterResponseParams _viewInspectorGetHitTesterResponseParamsFactory(bool rendererChanged) {
 | 
| -    var result = new ViewInspectorGetHitTesterResponseParams();
 | 
| -    result.rendererChanged = rendererChanged;
 | 
| -    return result;
 | 
| -  }
 | 
| -  static ViewInspectorResolveScenesResponseParams _viewInspectorResolveScenesResponseParamsFactory(List<view_token_mojom.ViewToken> viewTokens) {
 | 
| -    var result = new ViewInspectorResolveScenesResponseParams();
 | 
| -    result.viewTokens = viewTokens;
 | 
| -    return result;
 | 
| -  }
 | 
| -
 | 
| -  dynamic handleMessage(bindings.ServiceMessage message) {
 | 
| +  Function _viewInspectorGetHitTesterResponseParamsResponder(
 | 
| +      int requestId) {
 | 
| +  return (bool rendererChanged) {
 | 
| +      var result = new ViewInspectorGetHitTesterResponseParams();
 | 
| +      result.rendererChanged = rendererChanged;
 | 
| +      sendResponse(buildResponseWithId(
 | 
| +          result,
 | 
| +          _viewInspectorMethodGetHitTesterName,
 | 
| +          requestId,
 | 
| +          bindings.MessageHeader.kMessageIsResponse));
 | 
| +    };
 | 
| +  }
 | 
| +  Function _viewInspectorResolveScenesResponseParamsResponder(
 | 
| +      int requestId) {
 | 
| +  return (List<view_token_mojom.ViewToken> viewTokens) {
 | 
| +      var result = new ViewInspectorResolveScenesResponseParams();
 | 
| +      result.viewTokens = viewTokens;
 | 
| +      sendResponse(buildResponseWithId(
 | 
| +          result,
 | 
| +          _viewInspectorMethodResolveScenesName,
 | 
| +          requestId,
 | 
| +          bindings.MessageHeader.kMessageIsResponse));
 | 
| +    };
 | 
| +  }
 | 
| +
 | 
| +  void handleMessage(bindings.ServiceMessage message) {
 | 
|      if (bindings.ControlMessageHandler.isControlMessage(message)) {
 | 
| -      return bindings.ControlMessageHandler.handleMessage(this,
 | 
| -                                                          0,
 | 
| -                                                          message);
 | 
| +      bindings.ControlMessageHandler.handleMessage(
 | 
| +          this, 0, message);
 | 
| +      return;
 | 
|      }
 | 
|      if (_impl == null) {
 | 
|        throw new core.MojoApiError("$this has no implementation set");
 | 
| @@ -1585,52 +1632,17 @@ class _ViewInspectorStubControl
 | 
|        case _viewInspectorMethodGetHitTesterName:
 | 
|          var params = _ViewInspectorGetHitTesterParams.deserialize(
 | 
|              message.payload);
 | 
| -        var response = _impl.getHitTester(params.viewTreeToken,params.hitTester,_viewInspectorGetHitTesterResponseParamsFactory);
 | 
| -        if (response is Future) {
 | 
| -          return response.then((response) {
 | 
| -            if (response != null) {
 | 
| -              return buildResponseWithId(
 | 
| -                  response,
 | 
| -                  _viewInspectorMethodGetHitTesterName,
 | 
| -                  message.header.requestId,
 | 
| -                  bindings.MessageHeader.kMessageIsResponse);
 | 
| -            }
 | 
| -          });
 | 
| -        } else if (response != null) {
 | 
| -          return buildResponseWithId(
 | 
| -              response,
 | 
| -              _viewInspectorMethodGetHitTesterName,
 | 
| -              message.header.requestId,
 | 
| -              bindings.MessageHeader.kMessageIsResponse);
 | 
| -        }
 | 
| +        _impl.getHitTester(params.viewTreeToken, params.hitTester, _viewInspectorGetHitTesterResponseParamsResponder(message.header.requestId));
 | 
|          break;
 | 
|        case _viewInspectorMethodResolveScenesName:
 | 
|          var params = _ViewInspectorResolveScenesParams.deserialize(
 | 
|              message.payload);
 | 
| -        var response = _impl.resolveScenes(params.sceneTokens,_viewInspectorResolveScenesResponseParamsFactory);
 | 
| -        if (response is Future) {
 | 
| -          return response.then((response) {
 | 
| -            if (response != null) {
 | 
| -              return buildResponseWithId(
 | 
| -                  response,
 | 
| -                  _viewInspectorMethodResolveScenesName,
 | 
| -                  message.header.requestId,
 | 
| -                  bindings.MessageHeader.kMessageIsResponse);
 | 
| -            }
 | 
| -          });
 | 
| -        } else if (response != null) {
 | 
| -          return buildResponseWithId(
 | 
| -              response,
 | 
| -              _viewInspectorMethodResolveScenesName,
 | 
| -              message.header.requestId,
 | 
| -              bindings.MessageHeader.kMessageIsResponse);
 | 
| -        }
 | 
| +        _impl.resolveScenes(params.sceneTokens, _viewInspectorResolveScenesResponseParamsResponder(message.header.requestId));
 | 
|          break;
 | 
|        default:
 | 
|          throw new bindings.MojoCodecError("Unexpected message name");
 | 
|          break;
 | 
|      }
 | 
| -    return null;
 | 
|    }
 | 
|  
 | 
|    ViewInspector get impl => _impl;
 | 
| @@ -1684,11 +1696,11 @@ class ViewInspectorStub
 | 
|    }
 | 
|  
 | 
|  
 | 
| -  dynamic getHitTester(view_tree_token_mojom.ViewTreeToken viewTreeToken,hit_tests_mojom.HitTesterInterfaceRequest hitTester,[Function responseFactory = null]) {
 | 
| -    return impl.getHitTester(viewTreeToken,hitTester,responseFactory);
 | 
| +  void getHitTester(view_tree_token_mojom.ViewTreeToken viewTreeToken,hit_tests_mojom.HitTesterInterfaceRequest hitTester,void callback(bool rendererChanged)) {
 | 
| +    return impl.getHitTester(viewTreeToken,hitTester,callback);
 | 
|    }
 | 
| -  dynamic resolveScenes(List<scene_token_mojom.SceneToken> sceneTokens,[Function responseFactory = null]) {
 | 
| -    return impl.resolveScenes(sceneTokens,responseFactory);
 | 
| +  void resolveScenes(List<scene_token_mojom.SceneToken> sceneTokens,void callback(List<view_token_mojom.ViewToken> viewTokens)) {
 | 
| +    return impl.resolveScenes(sceneTokens,callback);
 | 
|    }
 | 
|  }
 | 
|  
 | 
| 
 |