Check in generated Dart bindings and add presubmit script

mojo/dart/packages/mojo_services/lib/mojo/ui/view_trees.mojom.dart

Index: mojo/dart/packages/mojo_services/lib/mojo/ui/view_trees.mojom.dart
diff --git a/mojo/dart/packages/mojo_services/lib/mojo/ui/view_trees.mojom.dart b/mojo/dart/packages/mojo_services/lib/mojo/ui/view_trees.mojom.dart
new file mode 100644
index 0000000000000000000000000000000000000000..ba28e2c332315890086ae46d01376d6186467082
--- /dev/null
+++ b/mojo/dart/packages/mojo_services/lib/mojo/ui/view_trees.mojom.dart
@@ -0,0 +1,1122 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+library view_trees_mojom;
+
+import 'dart:async';
+
+import 'package:mojo/bindings.dart' as bindings;
+import 'package:mojo/core.dart' as core;
+import 'package:mojo_services/mojo/ui/layouts.mojom.dart' as layouts_mojom;
+import 'package:mojo_services/mojo/ui/views.mojom.dart' as views_mojom;
+
+
+
+class ViewTreeOnLayoutParams extends bindings.Struct {
+  static const List<bindings.StructDataHeader> kVersions = const [
+    const bindings.StructDataHeader(8, 0)
+  ];
+
+  ViewTreeOnLayoutParams() : super(kVersions.last.size);
+
+  static ViewTreeOnLayoutParams deserialize(bindings.Message message) {
+    var decoder = new bindings.Decoder(message);
+    var result = decode(decoder);
+    if (decoder.excessHandles != null) {
+      decoder.excessHandles.forEach((h) => h.close());
+    }
+    return result;
+  }
+
+  static ViewTreeOnLayoutParams decode(bindings.Decoder decoder0) {
+    if (decoder0 == null) {
+      return null;
+    }
+    ViewTreeOnLayoutParams result = new ViewTreeOnLayoutParams();
+
+    var mainDataHeader = decoder0.decodeStructDataHeader();
+    if (mainDataHeader.version <= kVersions.last.version) {
+      // Scan in reverse order to optimize for more recent versions.
+      for (int i = kVersions.length - 1; i >= 0; --i) {
+        if (mainDataHeader.version >= kVersions[i].version) {
+          if (mainDataHeader.size == kVersions[i].size) {
+            // Found a match.
+            break;
+          }
+          throw new bindings.MojoCodecError(
+              'Header size doesn\'t correspond to known version size.');
+        }
+      }
+    } else if (mainDataHeader.size < kVersions.last.size) {
+      throw new bindings.MojoCodecError(
+        'Message newer than the last known version cannot be shorter than '
+        'required by the last known version.');
+    }
+    return result;
+  }
+
+  void encode(bindings.Encoder encoder) {
+    encoder.getStructEncoderAtOffset(kVersions.last);
+  }
+
+  String toString() {
+    return "ViewTreeOnLayoutParams("")";
+  }
+
+  Map toJson() {
+    Map map = new Map();
+    return map;
+  }
+}
+
+
+class ViewTreeOnLayoutResponseParams extends bindings.Struct {
+  static const List<bindings.StructDataHeader> kVersions = const [
+    const bindings.StructDataHeader(8, 0)
+  ];
+
+  ViewTreeOnLayoutResponseParams() : super(kVersions.last.size);
+
+  static ViewTreeOnLayoutResponseParams deserialize(bindings.Message message) {
+    var decoder = new bindings.Decoder(message);
+    var result = decode(decoder);
+    if (decoder.excessHandles != null) {
+      decoder.excessHandles.forEach((h) => h.close());
+    }
+    return result;
+  }
+
+  static ViewTreeOnLayoutResponseParams decode(bindings.Decoder decoder0) {
+    if (decoder0 == null) {
+      return null;
+    }
+    ViewTreeOnLayoutResponseParams result = new ViewTreeOnLayoutResponseParams();
+
+    var mainDataHeader = decoder0.decodeStructDataHeader();
+    if (mainDataHeader.version <= kVersions.last.version) {
+      // Scan in reverse order to optimize for more recent versions.
+      for (int i = kVersions.length - 1; i >= 0; --i) {
+        if (mainDataHeader.version >= kVersions[i].version) {
+          if (mainDataHeader.size == kVersions[i].size) {
+            // Found a match.
+            break;
+          }
+          throw new bindings.MojoCodecError(
+              'Header size doesn\'t correspond to known version size.');
+        }
+      }
+    } else if (mainDataHeader.size < kVersions.last.size) {
+      throw new bindings.MojoCodecError(
+        'Message newer than the last known version cannot be shorter than '
+        'required by the last known version.');
+    }
+    return result;
+  }
+
+  void encode(bindings.Encoder encoder) {
+    encoder.getStructEncoderAtOffset(kVersions.last);
+  }
+
+  String toString() {
+    return "ViewTreeOnLayoutResponseParams("")";
+  }
+
+  Map toJson() {
+    Map map = new Map();
+    return map;
+  }
+}
+
+
+class ViewTreeOnRootUnavailableParams extends bindings.Struct {
+  static const List<bindings.StructDataHeader> kVersions = const [
+    const bindings.StructDataHeader(16, 0)
+  ];
+  int rootKey = 0;
+
+  ViewTreeOnRootUnavailableParams() : super(kVersions.last.size);
+
+  static ViewTreeOnRootUnavailableParams deserialize(bindings.Message message) {
+    var decoder = new bindings.Decoder(message);
+    var result = decode(decoder);
+    if (decoder.excessHandles != null) {
+      decoder.excessHandles.forEach((h) => h.close());
+    }
+    return result;
+  }
+
+  static ViewTreeOnRootUnavailableParams decode(bindings.Decoder decoder0) {
+    if (decoder0 == null) {
+      return null;
+    }
+    ViewTreeOnRootUnavailableParams result = new ViewTreeOnRootUnavailableParams();
+
+    var mainDataHeader = decoder0.decodeStructDataHeader();
+    if (mainDataHeader.version <= kVersions.last.version) {
+      // Scan in reverse order to optimize for more recent versions.
+      for (int i = kVersions.length - 1; i >= 0; --i) {
+        if (mainDataHeader.version >= kVersions[i].version) {
+          if (mainDataHeader.size == kVersions[i].size) {
+            // Found a match.
+            break;
+          }
+          throw new bindings.MojoCodecError(
+              'Header size doesn\'t correspond to known version size.');
+        }
+      }
+    } else if (mainDataHeader.size < kVersions.last.size) {
+      throw new bindings.MojoCodecError(
+        'Message newer than the last known version cannot be shorter than '
+        'required by the last known version.');
+    }
+    if (mainDataHeader.version >= 0) {
+      
+      result.rootKey = decoder0.decodeUint32(8);
+    }
+    return result;
+  }
+
+  void encode(bindings.Encoder encoder) {
+    var encoder0 = encoder.getStructEncoderAtOffset(kVersions.last);
+    
+    encoder0.encodeUint32(rootKey, 8);
+  }
+
+  String toString() {
+    return "ViewTreeOnRootUnavailableParams("
+           "rootKey: $rootKey" ")";
+  }
+
+  Map toJson() {
+    Map map = new Map();
+    map["rootKey"] = rootKey;
+    return map;
+  }
+}
+
+
+class ViewTreeOnRootUnavailableResponseParams extends bindings.Struct {
+  static const List<bindings.StructDataHeader> kVersions = const [
+    const bindings.StructDataHeader(8, 0)
+  ];
+
+  ViewTreeOnRootUnavailableResponseParams() : super(kVersions.last.size);
+
+  static ViewTreeOnRootUnavailableResponseParams deserialize(bindings.Message message) {
+    var decoder = new bindings.Decoder(message);
+    var result = decode(decoder);
+    if (decoder.excessHandles != null) {
+      decoder.excessHandles.forEach((h) => h.close());
+    }
+    return result;
+  }
+
+  static ViewTreeOnRootUnavailableResponseParams decode(bindings.Decoder decoder0) {
+    if (decoder0 == null) {
+      return null;
+    }
+    ViewTreeOnRootUnavailableResponseParams result = new ViewTreeOnRootUnavailableResponseParams();
+
+    var mainDataHeader = decoder0.decodeStructDataHeader();
+    if (mainDataHeader.version <= kVersions.last.version) {
+      // Scan in reverse order to optimize for more recent versions.
+      for (int i = kVersions.length - 1; i >= 0; --i) {
+        if (mainDataHeader.version >= kVersions[i].version) {
+          if (mainDataHeader.size == kVersions[i].size) {
+            // Found a match.
+            break;
+          }
+          throw new bindings.MojoCodecError(
+              'Header size doesn\'t correspond to known version size.');
+        }
+      }
+    } else if (mainDataHeader.size < kVersions.last.size) {
+      throw new bindings.MojoCodecError(
+        'Message newer than the last known version cannot be shorter than '
+        'required by the last known version.');
+    }
+    return result;
+  }
+
+  void encode(bindings.Encoder encoder) {
+    encoder.getStructEncoderAtOffset(kVersions.last);
+  }
+
+  String toString() {
+    return "ViewTreeOnRootUnavailableResponseParams("")";
+  }
+
+  Map toJson() {
+    Map map = new Map();
+    return map;
+  }
+}
+
+
+class ViewTreeHostRequestLayoutParams extends bindings.Struct {
+  static const List<bindings.StructDataHeader> kVersions = const [
+    const bindings.StructDataHeader(8, 0)
+  ];
+
+  ViewTreeHostRequestLayoutParams() : super(kVersions.last.size);
+
+  static ViewTreeHostRequestLayoutParams deserialize(bindings.Message message) {
+    var decoder = new bindings.Decoder(message);
+    var result = decode(decoder);
+    if (decoder.excessHandles != null) {
+      decoder.excessHandles.forEach((h) => h.close());
+    }
+    return result;
+  }
+
+  static ViewTreeHostRequestLayoutParams decode(bindings.Decoder decoder0) {
+    if (decoder0 == null) {
+      return null;
+    }
+    ViewTreeHostRequestLayoutParams result = new ViewTreeHostRequestLayoutParams();
+
+    var mainDataHeader = decoder0.decodeStructDataHeader();
+    if (mainDataHeader.version <= kVersions.last.version) {
+      // Scan in reverse order to optimize for more recent versions.
+      for (int i = kVersions.length - 1; i >= 0; --i) {
+        if (mainDataHeader.version >= kVersions[i].version) {
+          if (mainDataHeader.size == kVersions[i].size) {
+            // Found a match.
+            break;
+          }
+          throw new bindings.MojoCodecError(
+              'Header size doesn\'t correspond to known version size.');
+        }
+      }
+    } else if (mainDataHeader.size < kVersions.last.size) {
+      throw new bindings.MojoCodecError(
+        'Message newer than the last known version cannot be shorter than '
+        'required by the last known version.');
+    }
+    return result;
+  }
+
+  void encode(bindings.Encoder encoder) {
+    encoder.getStructEncoderAtOffset(kVersions.last);
+  }
+
+  String toString() {
+    return "ViewTreeHostRequestLayoutParams("")";
+  }
+
+  Map toJson() {
+    Map map = new Map();
+    return map;
+  }
+}
+
+
+class ViewTreeHostSetRootParams extends bindings.Struct {
+  static const List<bindings.StructDataHeader> kVersions = const [
+    const bindings.StructDataHeader(24, 0)
+  ];
+  int rootKey = 0;
+  views_mojom.ViewToken rootViewToken = null;
+
+  ViewTreeHostSetRootParams() : super(kVersions.last.size);
+
+  static ViewTreeHostSetRootParams deserialize(bindings.Message message) {
+    var decoder = new bindings.Decoder(message);
+    var result = decode(decoder);
+    if (decoder.excessHandles != null) {
+      decoder.excessHandles.forEach((h) => h.close());
+    }
+    return result;
+  }
+
+  static ViewTreeHostSetRootParams decode(bindings.Decoder decoder0) {
+    if (decoder0 == null) {
+      return null;
+    }
+    ViewTreeHostSetRootParams result = new ViewTreeHostSetRootParams();
+
+    var mainDataHeader = decoder0.decodeStructDataHeader();
+    if (mainDataHeader.version <= kVersions.last.version) {
+      // Scan in reverse order to optimize for more recent versions.
+      for (int i = kVersions.length - 1; i >= 0; --i) {
+        if (mainDataHeader.version >= kVersions[i].version) {
+          if (mainDataHeader.size == kVersions[i].size) {
+            // Found a match.
+            break;
+          }
+          throw new bindings.MojoCodecError(
+              'Header size doesn\'t correspond to known version size.');
+        }
+      }
+    } else if (mainDataHeader.size < kVersions.last.size) {
+      throw new bindings.MojoCodecError(
+        'Message newer than the last known version cannot be shorter than '
+        'required by the last known version.');
+    }
+    if (mainDataHeader.version >= 0) {
+      
+      result.rootKey = decoder0.decodeUint32(8);
+    }
+    if (mainDataHeader.version >= 0) {
+      
+      var decoder1 = decoder0.decodePointer(16, false);
+      result.rootViewToken = views_mojom.ViewToken.decode(decoder1);
+    }
+    return result;
+  }
+
+  void encode(bindings.Encoder encoder) {
+    var encoder0 = encoder.getStructEncoderAtOffset(kVersions.last);
+    
+    encoder0.encodeUint32(rootKey, 8);
+    
+    encoder0.encodeStruct(rootViewToken, 16, false);
+  }
+
+  String toString() {
+    return "ViewTreeHostSetRootParams("
+           "rootKey: $rootKey" ", "
+           "rootViewToken: $rootViewToken" ")";
+  }
+
+  Map toJson() {
+    Map map = new Map();
+    map["rootKey"] = rootKey;
+    map["rootViewToken"] = rootViewToken;
+    return map;
+  }
+}
+
+
+class ViewTreeHostResetRootParams extends bindings.Struct {
+  static const List<bindings.StructDataHeader> kVersions = const [
+    const bindings.StructDataHeader(8, 0)
+  ];
+
+  ViewTreeHostResetRootParams() : super(kVersions.last.size);
+
+  static ViewTreeHostResetRootParams deserialize(bindings.Message message) {
+    var decoder = new bindings.Decoder(message);
+    var result = decode(decoder);
+    if (decoder.excessHandles != null) {
+      decoder.excessHandles.forEach((h) => h.close());
+    }
+    return result;
+  }
+
+  static ViewTreeHostResetRootParams decode(bindings.Decoder decoder0) {
+    if (decoder0 == null) {
+      return null;
+    }
+    ViewTreeHostResetRootParams result = new ViewTreeHostResetRootParams();
+
+    var mainDataHeader = decoder0.decodeStructDataHeader();
+    if (mainDataHeader.version <= kVersions.last.version) {
+      // Scan in reverse order to optimize for more recent versions.
+      for (int i = kVersions.length - 1; i >= 0; --i) {
+        if (mainDataHeader.version >= kVersions[i].version) {
+          if (mainDataHeader.size == kVersions[i].size) {
+            // Found a match.
+            break;
+          }
+          throw new bindings.MojoCodecError(
+              'Header size doesn\'t correspond to known version size.');
+        }
+      }
+    } else if (mainDataHeader.size < kVersions.last.size) {
+      throw new bindings.MojoCodecError(
+        'Message newer than the last known version cannot be shorter than '
+        'required by the last known version.');
+    }
+    return result;
+  }
+
+  void encode(bindings.Encoder encoder) {
+    encoder.getStructEncoderAtOffset(kVersions.last);
+  }
+
+  String toString() {
+    return "ViewTreeHostResetRootParams("")";
+  }
+
+  Map toJson() {
+    Map map = new Map();
+    return map;
+  }
+}
+
+
+class ViewTreeHostLayoutRootParams extends bindings.Struct {
+  static const List<bindings.StructDataHeader> kVersions = const [
+    const bindings.StructDataHeader(16, 0)
+  ];
+  layouts_mojom.ViewLayoutParams rootLayoutParams = null;
+
+  ViewTreeHostLayoutRootParams() : super(kVersions.last.size);
+
+  static ViewTreeHostLayoutRootParams deserialize(bindings.Message message) {
+    var decoder = new bindings.Decoder(message);
+    var result = decode(decoder);
+    if (decoder.excessHandles != null) {
+      decoder.excessHandles.forEach((h) => h.close());
+    }
+    return result;
+  }
+
+  static ViewTreeHostLayoutRootParams decode(bindings.Decoder decoder0) {
+    if (decoder0 == null) {
+      return null;
+    }
+    ViewTreeHostLayoutRootParams result = new ViewTreeHostLayoutRootParams();
+
+    var mainDataHeader = decoder0.decodeStructDataHeader();
+    if (mainDataHeader.version <= kVersions.last.version) {
+      // Scan in reverse order to optimize for more recent versions.
+      for (int i = kVersions.length - 1; i >= 0; --i) {
+        if (mainDataHeader.version >= kVersions[i].version) {
+          if (mainDataHeader.size == kVersions[i].size) {
+            // Found a match.
+            break;
+          }
+          throw new bindings.MojoCodecError(
+              'Header size doesn\'t correspond to known version size.');
+        }
+      }
+    } else if (mainDataHeader.size < kVersions.last.size) {
+      throw new bindings.MojoCodecError(
+        'Message newer than the last known version cannot be shorter than '
+        'required by the last known version.');
+    }
+    if (mainDataHeader.version >= 0) {
+      
+      var decoder1 = decoder0.decodePointer(8, false);
+      result.rootLayoutParams = layouts_mojom.ViewLayoutParams.decode(decoder1);
+    }
+    return result;
+  }
+
+  void encode(bindings.Encoder encoder) {
+    var encoder0 = encoder.getStructEncoderAtOffset(kVersions.last);
+    
+    encoder0.encodeStruct(rootLayoutParams, 8, false);
+  }
+
+  String toString() {
+    return "ViewTreeHostLayoutRootParams("
+           "rootLayoutParams: $rootLayoutParams" ")";
+  }
+
+  Map toJson() {
+    Map map = new Map();
+    map["rootLayoutParams"] = rootLayoutParams;
+    return map;
+  }
+}
+
+
+class ViewTreeHostLayoutRootResponseParams extends bindings.Struct {
+  static const List<bindings.StructDataHeader> kVersions = const [
+    const bindings.StructDataHeader(16, 0)
+  ];
+  layouts_mojom.ViewLayoutInfo info = null;
+
+  ViewTreeHostLayoutRootResponseParams() : super(kVersions.last.size);
+
+  static ViewTreeHostLayoutRootResponseParams deserialize(bindings.Message message) {
+    var decoder = new bindings.Decoder(message);
+    var result = decode(decoder);
+    if (decoder.excessHandles != null) {
+      decoder.excessHandles.forEach((h) => h.close());
+    }
+    return result;
+  }
+
+  static ViewTreeHostLayoutRootResponseParams decode(bindings.Decoder decoder0) {
+    if (decoder0 == null) {
+      return null;
+    }
+    ViewTreeHostLayoutRootResponseParams result = new ViewTreeHostLayoutRootResponseParams();
+
+    var mainDataHeader = decoder0.decodeStructDataHeader();
+    if (mainDataHeader.version <= kVersions.last.version) {
+      // Scan in reverse order to optimize for more recent versions.
+      for (int i = kVersions.length - 1; i >= 0; --i) {
+        if (mainDataHeader.version >= kVersions[i].version) {
+          if (mainDataHeader.size == kVersions[i].size) {
+            // Found a match.
+            break;
+          }
+          throw new bindings.MojoCodecError(
+              'Header size doesn\'t correspond to known version size.');
+        }
+      }
+    } else if (mainDataHeader.size < kVersions.last.size) {
+      throw new bindings.MojoCodecError(
+        'Message newer than the last known version cannot be shorter than '
+        'required by the last known version.');
+    }
+    if (mainDataHeader.version >= 0) {
+      
+      var decoder1 = decoder0.decodePointer(8, true);
+      result.info = layouts_mojom.ViewLayoutInfo.decode(decoder1);
+    }
+    return result;
+  }
+
+  void encode(bindings.Encoder encoder) {
+    var encoder0 = encoder.getStructEncoderAtOffset(kVersions.last);
+    
+    encoder0.encodeStruct(info, 8, true);
+  }
+
+  String toString() {
+    return "ViewTreeHostLayoutRootResponseParams("
+           "info: $info" ")";
+  }
+
+  Map toJson() {
+    Map map = new Map();
+    map["info"] = info;
+    return map;
+  }
+}
+
+const int kViewTree_onLayout_name = 0;
+const int kViewTree_onRootUnavailable_name = 1;
+
+const String ViewTreeName =
+      'mojo::ui::ViewTree';
+
+abstract class ViewTree {
+  dynamic onLayout([Function responseFactory = null]);
+  dynamic onRootUnavailable(int rootKey,[Function responseFactory = null]);
+
+}
+
+
+class ViewTreeProxyImpl extends bindings.Proxy {
+  ViewTreeProxyImpl.fromEndpoint(
+      core.MojoMessagePipeEndpoint endpoint) : super.fromEndpoint(endpoint);
+
+  ViewTreeProxyImpl.fromHandle(core.MojoHandle handle) :
+      super.fromHandle(handle);
+
+  ViewTreeProxyImpl.unbound() : super.unbound();
+
+  static ViewTreeProxyImpl newFromEndpoint(
+      core.MojoMessagePipeEndpoint endpoint) {
+    assert(endpoint.setDescription("For ViewTreeProxyImpl"));
+    return new ViewTreeProxyImpl.fromEndpoint(endpoint);
+  }
+
+  String get name => ViewTreeName;
+
+  void handleResponse(bindings.ServiceMessage message) {
+    switch (message.header.type) {
+      case kViewTree_onLayout_name:
+        var r = ViewTreeOnLayoutResponseParams.deserialize(
+            message.payload);
+        if (!message.header.hasRequestId) {
+          proxyError("Expected a message with a valid request Id.");
+          return;
+        }
+        Completer c = completerMap[message.header.requestId];
+        if (c == 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);
+        break;
+      case kViewTree_onRootUnavailable_name:
+        var r = ViewTreeOnRootUnavailableResponseParams.deserialize(
+            message.payload);
+        if (!message.header.hasRequestId) {
+          proxyError("Expected a message with a valid request Id.");
+          return;
+        }
+        Completer c = completerMap[message.header.requestId];
+        if (c == 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);
+        break;
+      default:
+        proxyError("Unexpected message type: ${message.header.type}");
+        close(immediate: true);
+        break;
+    }
+  }
+
+  String toString() {
+    var superString = super.toString();
+    return "ViewTreeProxyImpl($superString)";
+  }
+}
+
+
+class _ViewTreeProxyCalls implements ViewTree {
+  ViewTreeProxyImpl _proxyImpl;
+
+  _ViewTreeProxyCalls(this._proxyImpl);
+    dynamic onLayout([Function responseFactory = null]) {
+      var params = new ViewTreeOnLayoutParams();
+      return _proxyImpl.sendMessageWithRequestId(
+          params,
+          kViewTree_onLayout_name,
+          -1,
+          bindings.MessageHeader.kMessageExpectsResponse);
+    }
+    dynamic onRootUnavailable(int rootKey,[Function responseFactory = null]) {
+      var params = new ViewTreeOnRootUnavailableParams();
+      params.rootKey = rootKey;
+      return _proxyImpl.sendMessageWithRequestId(
+          params,
+          kViewTree_onRootUnavailable_name,
+          -1,
+          bindings.MessageHeader.kMessageExpectsResponse);
+    }
+}
+
+
+class ViewTreeProxy implements bindings.ProxyBase {
+  final bindings.Proxy impl;
+  ViewTree ptr;
+  final String name = ViewTreeName;
+
+  ViewTreeProxy(ViewTreeProxyImpl proxyImpl) :
+      impl = proxyImpl,
+      ptr = new _ViewTreeProxyCalls(proxyImpl);
+
+  ViewTreeProxy.fromEndpoint(
+      core.MojoMessagePipeEndpoint endpoint) :
+      impl = new ViewTreeProxyImpl.fromEndpoint(endpoint) {
+    ptr = new _ViewTreeProxyCalls(impl);
+  }
+
+  ViewTreeProxy.fromHandle(core.MojoHandle handle) :
+      impl = new ViewTreeProxyImpl.fromHandle(handle) {
+    ptr = new _ViewTreeProxyCalls(impl);
+  }
+
+  ViewTreeProxy.unbound() :
+      impl = new ViewTreeProxyImpl.unbound() {
+    ptr = new _ViewTreeProxyCalls(impl);
+  }
+
+  factory ViewTreeProxy.connectToService(
+      bindings.ServiceConnector s, String url) {
+    ViewTreeProxy p = new ViewTreeProxy.unbound();
+    s.connectToService(url, p);
+    return p;
+  }
+
+  static ViewTreeProxy newFromEndpoint(
+      core.MojoMessagePipeEndpoint endpoint) {
+    assert(endpoint.setDescription("For ViewTreeProxy"));
+    return new ViewTreeProxy.fromEndpoint(endpoint);
+  }
+
+  Future close({bool immediate: false}) => impl.close(immediate: immediate);
+
+  Future responseOrError(Future f) => impl.responseOrError(f);
+
+  Future get errorFuture => impl.errorFuture;
+
+  int get version => impl.version;
+
+  Future<int> queryVersion() => impl.queryVersion();
+
+  void requireVersion(int requiredVersion) {
+    impl.requireVersion(requiredVersion);
+  }
+
+  String toString() {
+    return "ViewTreeProxy($impl)";
+  }
+}
+
+
+class ViewTreeStub extends bindings.Stub {
+  ViewTree _impl = null;
+
+  ViewTreeStub.fromEndpoint(
+      core.MojoMessagePipeEndpoint endpoint, [this._impl])
+      : super.fromEndpoint(endpoint);
+
+  ViewTreeStub.fromHandle(core.MojoHandle handle, [this._impl])
+      : super.fromHandle(handle);
+
+  ViewTreeStub.unbound() : super.unbound();
+
+  static ViewTreeStub newFromEndpoint(
+      core.MojoMessagePipeEndpoint endpoint) {
+    assert(endpoint.setDescription("For ViewTreeStub"));
+    return new ViewTreeStub.fromEndpoint(endpoint);
+  }
+
+  static const String name = ViewTreeName;
+
+
+  ViewTreeOnLayoutResponseParams _ViewTreeOnLayoutResponseParamsFactory() {
+    var result = new ViewTreeOnLayoutResponseParams();
+    return result;
+  }
+  ViewTreeOnRootUnavailableResponseParams _ViewTreeOnRootUnavailableResponseParamsFactory() {
+    var result = new ViewTreeOnRootUnavailableResponseParams();
+    return result;
+  }
+
+  dynamic handleMessage(bindings.ServiceMessage message) {
+    if (bindings.ControlMessageHandler.isControlMessage(message)) {
+      return bindings.ControlMessageHandler.handleMessage(this,
+                                                          0,
+                                                          message);
+    }
+    assert(_impl != null);
+    switch (message.header.type) {
+      case kViewTree_onLayout_name:
+        var params = ViewTreeOnLayoutParams.deserialize(
+            message.payload);
+        var response = _impl.onLayout(_ViewTreeOnLayoutResponseParamsFactory);
+        if (response is Future) {
+          return response.then((response) {
+            if (response != null) {
+              return buildResponseWithId(
+                  response,
+                  kViewTree_onLayout_name,
+                  message.header.requestId,
+                  bindings.MessageHeader.kMessageIsResponse);
+            }
+          });
+        } else if (response != null) {
+          return buildResponseWithId(
+              response,
+              kViewTree_onLayout_name,
+              message.header.requestId,
+              bindings.MessageHeader.kMessageIsResponse);
+        }
+        break;
+      case kViewTree_onRootUnavailable_name:
+        var params = ViewTreeOnRootUnavailableParams.deserialize(
+            message.payload);
+        var response = _impl.onRootUnavailable(params.rootKey,_ViewTreeOnRootUnavailableResponseParamsFactory);
+        if (response is Future) {
+          return response.then((response) {
+            if (response != null) {
+              return buildResponseWithId(
+                  response,
+                  kViewTree_onRootUnavailable_name,
+                  message.header.requestId,
+                  bindings.MessageHeader.kMessageIsResponse);
+            }
+          });
+        } else if (response != null) {
+          return buildResponseWithId(
+              response,
+              kViewTree_onRootUnavailable_name,
+              message.header.requestId,
+              bindings.MessageHeader.kMessageIsResponse);
+        }
+        break;
+      default:
+        throw new bindings.MojoCodecError("Unexpected message name");
+        break;
+    }
+    return null;
+  }
+
+  ViewTree get impl => _impl;
+  set impl(ViewTree d) {
+    assert(_impl == null);
+    _impl = d;
+  }
+
+  String toString() {
+    var superString = super.toString();
+    return "ViewTreeStub($superString)";
+  }
+
+  int get version => 0;
+}
+
+const int kViewTreeHost_requestLayout_name = 0;
+const int kViewTreeHost_setRoot_name = 1;
+const int kViewTreeHost_resetRoot_name = 2;
+const int kViewTreeHost_layoutRoot_name = 3;
+
+const String ViewTreeHostName =
+      'mojo::ui::ViewTreeHost';
+
+abstract class ViewTreeHost {
+  void requestLayout();
+  void setRoot(int rootKey, views_mojom.ViewToken rootViewToken);
+  void resetRoot();
+  dynamic layoutRoot(layouts_mojom.ViewLayoutParams rootLayoutParams,[Function responseFactory = null]);
+
+}
+
+
+class ViewTreeHostProxyImpl extends bindings.Proxy {
+  ViewTreeHostProxyImpl.fromEndpoint(
+      core.MojoMessagePipeEndpoint endpoint) : super.fromEndpoint(endpoint);
+
+  ViewTreeHostProxyImpl.fromHandle(core.MojoHandle handle) :
+      super.fromHandle(handle);
+
+  ViewTreeHostProxyImpl.unbound() : super.unbound();
+
+  static ViewTreeHostProxyImpl newFromEndpoint(
+      core.MojoMessagePipeEndpoint endpoint) {
+    assert(endpoint.setDescription("For ViewTreeHostProxyImpl"));
+    return new ViewTreeHostProxyImpl.fromEndpoint(endpoint);
+  }
+
+  String get name => ViewTreeHostName;
+
+  void handleResponse(bindings.ServiceMessage message) {
+    switch (message.header.type) {
+      case kViewTreeHost_layoutRoot_name:
+        var r = ViewTreeHostLayoutRootResponseParams.deserialize(
+            message.payload);
+        if (!message.header.hasRequestId) {
+          proxyError("Expected a message with a valid request Id.");
+          return;
+        }
+        Completer c = completerMap[message.header.requestId];
+        if (c == 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);
+        break;
+      default:
+        proxyError("Unexpected message type: ${message.header.type}");
+        close(immediate: true);
+        break;
+    }
+  }
+
+  String toString() {
+    var superString = super.toString();
+    return "ViewTreeHostProxyImpl($superString)";
+  }
+}
+
+
+class _ViewTreeHostProxyCalls implements ViewTreeHost {
+  ViewTreeHostProxyImpl _proxyImpl;
+
+  _ViewTreeHostProxyCalls(this._proxyImpl);
+    void requestLayout() {
+      if (!_proxyImpl.isBound) {
+        _proxyImpl.proxyError("The Proxy is closed.");
+        return;
+      }
+      var params = new ViewTreeHostRequestLayoutParams();
+      _proxyImpl.sendMessage(params, kViewTreeHost_requestLayout_name);
+    }
+  
+    void setRoot(int rootKey, views_mojom.ViewToken rootViewToken) {
+      if (!_proxyImpl.isBound) {
+        _proxyImpl.proxyError("The Proxy is closed.");
+        return;
+      }
+      var params = new ViewTreeHostSetRootParams();
+      params.rootKey = rootKey;
+      params.rootViewToken = rootViewToken;
+      _proxyImpl.sendMessage(params, kViewTreeHost_setRoot_name);
+    }
+  
+    void resetRoot() {
+      if (!_proxyImpl.isBound) {
+        _proxyImpl.proxyError("The Proxy is closed.");
+        return;
+      }
+      var params = new ViewTreeHostResetRootParams();
+      _proxyImpl.sendMessage(params, kViewTreeHost_resetRoot_name);
+    }
+  
+    dynamic layoutRoot(layouts_mojom.ViewLayoutParams rootLayoutParams,[Function responseFactory = null]) {
+      var params = new ViewTreeHostLayoutRootParams();
+      params.rootLayoutParams = rootLayoutParams;
+      return _proxyImpl.sendMessageWithRequestId(
+          params,
+          kViewTreeHost_layoutRoot_name,
+          -1,
+          bindings.MessageHeader.kMessageExpectsResponse);
+    }
+}
+
+
+class ViewTreeHostProxy implements bindings.ProxyBase {
+  final bindings.Proxy impl;
+  ViewTreeHost ptr;
+  final String name = ViewTreeHostName;
+
+  ViewTreeHostProxy(ViewTreeHostProxyImpl proxyImpl) :
+      impl = proxyImpl,
+      ptr = new _ViewTreeHostProxyCalls(proxyImpl);
+
+  ViewTreeHostProxy.fromEndpoint(
+      core.MojoMessagePipeEndpoint endpoint) :
+      impl = new ViewTreeHostProxyImpl.fromEndpoint(endpoint) {
+    ptr = new _ViewTreeHostProxyCalls(impl);
+  }
+
+  ViewTreeHostProxy.fromHandle(core.MojoHandle handle) :
+      impl = new ViewTreeHostProxyImpl.fromHandle(handle) {
+    ptr = new _ViewTreeHostProxyCalls(impl);
+  }
+
+  ViewTreeHostProxy.unbound() :
+      impl = new ViewTreeHostProxyImpl.unbound() {
+    ptr = new _ViewTreeHostProxyCalls(impl);
+  }
+
+  factory ViewTreeHostProxy.connectToService(
+      bindings.ServiceConnector s, String url) {
+    ViewTreeHostProxy p = new ViewTreeHostProxy.unbound();
+    s.connectToService(url, p);
+    return p;
+  }
+
+  static ViewTreeHostProxy newFromEndpoint(
+      core.MojoMessagePipeEndpoint endpoint) {
+    assert(endpoint.setDescription("For ViewTreeHostProxy"));
+    return new ViewTreeHostProxy.fromEndpoint(endpoint);
+  }
+
+  Future close({bool immediate: false}) => impl.close(immediate: immediate);
+
+  Future responseOrError(Future f) => impl.responseOrError(f);
+
+  Future get errorFuture => impl.errorFuture;
+
+  int get version => impl.version;
+
+  Future<int> queryVersion() => impl.queryVersion();
+
+  void requireVersion(int requiredVersion) {
+    impl.requireVersion(requiredVersion);
+  }
+
+  String toString() {
+    return "ViewTreeHostProxy($impl)";
+  }
+}
+
+
+class ViewTreeHostStub extends bindings.Stub {
+  ViewTreeHost _impl = null;
+
+  ViewTreeHostStub.fromEndpoint(
+      core.MojoMessagePipeEndpoint endpoint, [this._impl])
+      : super.fromEndpoint(endpoint);
+
+  ViewTreeHostStub.fromHandle(core.MojoHandle handle, [this._impl])
+      : super.fromHandle(handle);
+
+  ViewTreeHostStub.unbound() : super.unbound();
+
+  static ViewTreeHostStub newFromEndpoint(
+      core.MojoMessagePipeEndpoint endpoint) {
+    assert(endpoint.setDescription("For ViewTreeHostStub"));
+    return new ViewTreeHostStub.fromEndpoint(endpoint);
+  }
+
+  static const String name = ViewTreeHostName;
+
+
+  ViewTreeHostLayoutRootResponseParams _ViewTreeHostLayoutRootResponseParamsFactory(layouts_mojom.ViewLayoutInfo info) {
+    var result = new ViewTreeHostLayoutRootResponseParams();
+    result.info = info;
+    return result;
+  }
+
+  dynamic handleMessage(bindings.ServiceMessage message) {
+    if (bindings.ControlMessageHandler.isControlMessage(message)) {
+      return bindings.ControlMessageHandler.handleMessage(this,
+                                                          0,
+                                                          message);
+    }
+    assert(_impl != null);
+    switch (message.header.type) {
+      case kViewTreeHost_requestLayout_name:
+        var params = ViewTreeHostRequestLayoutParams.deserialize(
+            message.payload);
+        _impl.requestLayout();
+        break;
+      case kViewTreeHost_setRoot_name:
+        var params = ViewTreeHostSetRootParams.deserialize(
+            message.payload);
+        _impl.setRoot(params.rootKey, params.rootViewToken);
+        break;
+      case kViewTreeHost_resetRoot_name:
+        var params = ViewTreeHostResetRootParams.deserialize(
+            message.payload);
+        _impl.resetRoot();
+        break;
+      case kViewTreeHost_layoutRoot_name:
+        var params = ViewTreeHostLayoutRootParams.deserialize(
+            message.payload);
+        var response = _impl.layoutRoot(params.rootLayoutParams,_ViewTreeHostLayoutRootResponseParamsFactory);
+        if (response is Future) {
+          return response.then((response) {
+            if (response != null) {
+              return buildResponseWithId(
+                  response,
+                  kViewTreeHost_layoutRoot_name,
+                  message.header.requestId,
+                  bindings.MessageHeader.kMessageIsResponse);
+            }
+          });
+        } else if (response != null) {
+          return buildResponseWithId(
+              response,
+              kViewTreeHost_layoutRoot_name,
+              message.header.requestId,
+              bindings.MessageHeader.kMessageIsResponse);
+        }
+        break;
+      default:
+        throw new bindings.MojoCodecError("Unexpected message name");
+        break;
+    }
+    return null;
+  }
+
+  ViewTreeHost get impl => _impl;
+  set impl(ViewTreeHost d) {
+    assert(_impl == null);
+    _impl = d;
+  }
+
+  String toString() {
+    var superString = super.toString();
+    return "ViewTreeHostStub($superString)";
+  }
+
+  int get version => 0;
+}
+
+