Fixed analyzer test to use dart2js not dartium

sdk/lib/html/html_common/conversions_dartium.dart

-part of html_common;
-
-convertDartToNative_PrepareForStructuredClone(value) =>
-    new _StructuredCloneDartium()
-        .convertDartToNative_PrepareForStructuredClone(value);
-
-convertNativeToDart_AcceptStructuredClone(object, {mustCopy: false}) =>
-    new _AcceptStructuredCloneDartium()
-        .convertNativeToDart_AcceptStructuredClone(object, mustCopy: mustCopy);
-
-class _StructuredCloneDartium extends _StructuredClone {
-  newJsMap() => js.JsNative.newObject();
-  putIntoMap(map, key, value) => js.JsNative.setProperty(map, key, value);
-  newJsList(length) => js.JsNative.newArray()..length = length;
-  cloneNotRequired(e) => e is js.JSObject || e is TypedData || e is ByteBuffer;
-}
-
-/// A version of _AcceptStructuredClone, but using a different algorithm
-/// so we can take advantage of an identity HashMap on Dartium without
-/// the bad side-effect of modifying the JS source objects if we do the same in
-/// dart2js.
-///
-/// This no longer inherits anything from _AcceptStructuredClone
-/// and is never used polymorphically with it, so it doesn't inherit.
-class _AcceptStructuredCloneDartium {
-  newDartList(length) => new List(length);
-
-  // As long as we stick to JSObject instead of intermingling legacy JsObject,
-  // we can simply use identical.
-  bool identicalInJs(a, b) => identical(a, b);
-
-  void forEachJsField(jsObject, action) {
-    var keys = js.JsNative.callMethod(_object, "keys", [jsObject]);
-    for (var key in keys) {
-      action(key, js.JsNative.getProperty(jsObject, key));
-    }
-  }
-
-  // Keep track of the clones, keyed by the original object. If we're
-  // not copying, these may be the same.
-  var clones = new HashMap.identity();
-  bool mustCopy = false;
-
-  Object findSlot(value) {
-    return clones.putIfAbsent(value, () => null);
-  }
-
-  writeSlot(original, x) {
-    clones[original] = x;
-  }
-
-  walk(e) {
-    if (e == null) return e;
-    if (e is bool) return e;
-    if (e is num) return e;
-    if (e is String) return e;
-    if (e is DateTime) return e;
-
-    if (isJavaScriptRegExp(e)) {
-      // TODO(sra).
-      throw new UnimplementedError('structured clone of RegExp');
-    }
-
-    if (isJavaScriptPromise(e)) {
-      return convertNativePromiseToDartFuture(e);
-    }
-
-    if (isJavaScriptSimpleObject(e)) {
-      // TODO(sra): If mustCopy is false, swizzle the prototype for one of a Map
-      // implementation that uses the properies as storage.
-      var copy = findSlot(e);
-      if (copy != null) return copy;
-      copy = {};
-
-      writeSlot(e, copy);
-      forEachJsField(e, (key, value) => copy[key] = walk(value));
-      return copy;
-    }
-
-    if (isJavaScriptArray(e)) {
-      var copy = findSlot(e);
-      if (copy != null) return copy;
-
-      int length = e.length;
-      // Since a JavaScript Array is an instance of Dart List, we can modify it
-      // in-place unless we must copy.
-      copy = mustCopy ? newDartList(length) : e;
-      writeSlot(e, copy);
-
-      for (int i = 0; i < length; i++) {
-        copy[i] = walk(e[i]);
-      }
-      return copy;
-    }
-
-    // Assume anything else is already a valid Dart object, either by having
-    // already been processed, or e.g. a clonable native class.
-    return e;
-  }
-
-  convertNativeToDart_AcceptStructuredClone(object, {mustCopy: false}) {
-    this.mustCopy = mustCopy;
-    var copy = walk(object);
-    return copy;
-  }
-}
-
-final _dateConstructor = js.JsNative.getProperty(window, "Date");
-final _regexConstructor = js.JsNative.getProperty(window, "RegExp");
-
-bool isJavaScriptDate(value) =>
-    value is js.JSObject && js.JsNative.instanceof(value, _dateConstructor);
-bool isJavaScriptRegExp(value) =>
-    value is js.JSObject && js.JsNative.instanceof(value, _regexConstructor);
-bool isJavaScriptArray(value) => value is js.JSArray;
-
-final _object = js.JsNative.getProperty(window, "Object");
-final _getPrototypeOf = js.JsNative.getProperty(_object, "getPrototypeOf");
-_getProto(object) {
-  return _getPrototypeOf(object);
-}
-
-final _objectProto = js.JsNative.getProperty(_object, "prototype");
-
-bool isJavaScriptSimpleObject(value) {
-  if (value is! js.JSObject) return false;
-  var proto = _getProto(value);
-  return proto == _objectProto || proto == null;
-}
-
-// TODO(jacobr): this makes little sense unless we are doing something
-// ambitious to make Dartium and Dart2Js interop well with each other.
-bool isImmutableJavaScriptArray(value) =>
-    isJavaScriptArray(value) &&
-    js.JsNative.getProperty(value, "immutable$list") != null;
-
-final _promiseConstructor = js.JsNative.getProperty(window, 'Promise');
-bool isJavaScriptPromise(value) =>
-    value is js.JSObject &&
-    identical(
-        js.JsNative.getProperty(value, 'constructor'), _promiseConstructor);
-
-Future convertNativePromiseToDartFuture(js.JSObject promise) {
-  var completer = new Completer();
-  var newPromise = js.JsNative.callMethod(
-      js.JsNative.callMethod(promise, "then",
-          [js.allowInterop((result) => completer.complete(result))]),
-      "catch",
-      [js.allowInterop((result) => completer.completeError(result))]);
-  return completer.future;
-}
-
-convertDartToNative_DateTime(DateTime date) {
-  return date;
-}
-
-/// Creates a Dart Rectangle from a Javascript object with properties
-/// left, top, width and height or a 4 element array of integers. Used internally in Dartium.
-Rectangle make_dart_rectangle(r) {
-  if (r == null) return null;
-  if (r is List) {
-    return new Rectangle(r[0], r[1], r[2], r[3]);
-  }
-
-  return new Rectangle(
-      js.JsNative.getProperty(r, 'left'),
-      js.JsNative.getProperty(r, 'top'),
-      js.JsNative.getProperty(r, 'width'),
-      js.JsNative.getProperty(r, 'height'));
-}
-
-// Converts a flat Dart map into a JavaScript object with properties this is
-// is the Dartium only version it uses dart:js.
-// TODO(alanknight): This could probably be unified with the dart2js conversions
-// code in html_common and be more general.
-convertDartToNative_Dictionary(Map dict) {
-  if (dict == null) return null;
-  var jsObject = js.JsNative.newObject();
-  dict.forEach((String key, value) {
-    if (value is List) {
-      var jsArray = js.JsNative.newArray();
-      value.forEach((elem) {
-        jsArray.add(elem is Map ? convertDartToNative_Dictionary(elem) : elem);
-      });
-      js.JsNative.setProperty(jsObject, key, jsArray);
-    } else {
-      js.JsNative.setProperty(jsObject, key, value);
-    }
-  });
-  return jsObject;
-}
-
-// Creates a Dart class to allow members of the Map to be fetched (as if getters exist).
-// TODO(terry): Need to use package:js but that's a problem in dart:html. Talk to
-//              Jacob about how to do this properly using dart:js.
-class _ReturnedDictionary {
-  Map _values;
-
-  noSuchMethod(Invocation invocation) {
-    var key = MirrorSystem.getName(invocation.memberName);
-    if (invocation.isGetter) {
-      return _values[key];
-    } else if (invocation.isSetter && key.endsWith('=')) {
-      key = key.substring(0, key.length - 1);
-      _values[key] = invocation.positionalArguments[0];
-    }
-  }
-
-  Map get toMap => _values;
-
-  _ReturnedDictionary(Map value) : _values = value != null ? value : {};
-}
-
-// Helper function to wrapped a returned dictionary from blink to a Dart looking
-// class.
-convertNativeDictionaryToDartDictionary(values) {
-  if (values is! Map) {
-    // TODO(jacobr): wish wwe didn't have to do this.
-    values = convertNativeToDart_SerializedScriptValue(values);
-  }
-  return values != null ? new _ReturnedDictionary(values) : null;
-}
-
-convertNativeToDart_Dictionary(values) =>
-    convertNativeToDart_SerializedScriptValue(values);
-
-// Conversion function place holder (currently not used in dart2js or dartium).
-List convertDartToNative_StringArray(List<String> input) => input;
-
-// Converts a Dart list into a JsArray. For the Dartium version only.
-convertDartToNative_List(List input) => new js.JsArray()..addAll(input);
-
-// Incredibly slow implementation to lookup the runtime type for an object.
-// Fortunately, performance doesn't matter much as the results are cached
-// as long as the object being looked up has a valid prototype.
-// TODO(jacobr): we should track the # of lookups to ensure that things aren't
-// going off the rails due to objects with null prototypes, etc.
-// Note: unlike all other methods in this class, here we intentionally use
-// the old JsObject types to bootstrap the new typed bindings.
-Type lookupType(js.JsObject jsObject, bool isElement) {
-  try {
-    // TODO(jacobr): add static methods that return the runtime type of the patch
-    // class so that this code works as expected.
-    if (jsObject is js.JsArray) {
-      return js.JSArray.instanceRuntimeType;
-    }
-    if (jsObject is js.JsFunction) {
-      return js.JSFunction.instanceRuntimeType;
-    }
-
-    var constructor = js.JsNative.getProperty(jsObject, 'constructor');
-    if (constructor == null) {
-      // Perfectly valid case for JavaScript objects where __proto__ has
-      // intentionally been set to null.
-      // We should track and warn about this case as peformance will be poor.
-      return js.JSObject.instanceRuntimeType;
-    }
-    var jsTypeName = js.JsNative.getProperty(constructor, 'name');
-    if (jsTypeName is! String || jsTypeName.length == 0) {
-      // Not an html type.
-      return js.JSObject.instanceRuntimeType;
-    }
-
-    var dartClass_instance;
-    var customElementClass = null;
-    var extendsTag = "";
-
-    Type type = getHtmlCreateType(jsTypeName);
-    if (type != null) return type;
-
-    // Start walking the prototype chain looking for a JS class.
-    var prototype = js.JsNative.getProperty(jsObject, '__proto__');
-    while (prototype != null) {
-      // We're a Dart class that's pointing to a JS class.
-      var constructor = js.JsNative.getProperty(prototype, 'constructor');
-      if (constructor != null) {
-        jsTypeName = js.JsNative.getProperty(constructor, 'name');
-        type = getHtmlCreateType(jsTypeName);
-        if (type != null) return type;
-      }
-      prototype = js.JsNative.getProperty(prototype, '__proto__');
-    }
-  } catch (e) {
-    // This case can happen for cross frame objects.
-    if (js.JsNative.hasProperty(e, "postMessage")) {
-      // assume this is a Window. To match Dart2JS, separate conversion code
-      // in dart:html will switch the wrapper to a cross frame window as
-      // required.
-      // TODO(jacobr): we could consider removing this code completely.
-      return Window.instanceRuntimeType;
-    }
-  }
-  return js.JSObject.instanceRuntimeType;
-}