Update to latest analyzer

lib/runtime/dart/convert.js

 dart_library.library('dart/convert', null, /* Imports */[
   "dart/_runtime",
   'dart/core',
   'dart/async',
   'dart/typed_data',
   'dart/_internal',
   'dart/collection'
 ], /* Lazy imports */[
 ], function(exports, dart, core, async, typed_data, _internal, collection) {
   'use strict';
@@ skipping 278 matching lines @@
   }
   dart.setSignature(AsciiDecoder, {
     constructors: () => ({AsciiDecoder: [AsciiDecoder, [], {allowInvalid: core.bool}]}),
     methods: () => ({startChunkedConversion: [ByteConversionSink, [core.Sink$(core.String)]]})
   });
   const ChunkedConversionSink$ = dart.generic(function(T) {
     class ChunkedConversionSink extends core.Object {
       ChunkedConversionSink() {
       }
       static withCallback(callback) {
-        return new _SimpleCallbackSink(callback);
+        return new (_SimpleCallbackSink$(T))(callback);
       }
     }
     ChunkedConversionSink[dart.implements] = () => [core.Sink$(T)];
     dart.setSignature(ChunkedConversionSink, {
       constructors: () => ({
         ChunkedConversionSink: [ChunkedConversionSink$(T), []],
         withCallback: [ChunkedConversionSink$(T), [dart.functionType(dart.void, [core.List$(T)])]]
       })
     });
     return ChunkedConversionSink;
@@ skipping 899 matching lines @@
     }
     writeMap(map) {
       this.writeString('{');
       let separator = '"';
       map.forEach(dart.fn(((key, value) => {
         this.writeString(separator);
         separator = ',"';
         this.writeStringContent(key);
         this.writeString('":');
         this.writeObject(value);
-      }).bind(this), dart.dynamic, [core.String, dart.dynamic]));
+      }).bind(this), dart.void, [core.String, core.Object]));
       this.writeString('}');
     }
   }
   dart.setSignature(_JsonStringifier, {
     constructors: () => ({_JsonStringifier: [_JsonStringifier, [dart.functionType(core.Object, [core.Object])]]}),
     methods: () => ({
       writeStringContent: [dart.void, [core.String]],
       [_checkCycle]: [dart.void, [dart.dynamic]],
       [_removeSeen]: [dart.void, [dart.dynamic]],
       writeObject: [dart.void, [dart.dynamic]],
@@ skipping 52 matching lines @@
         map.forEach(dart.fn(((key, value) => {
           if (!dart.notNull(first)) {
             this.writeString(",\n");
           }
           this.writeIndentation(this[_indentLevel]);
           this.writeString('"');
           this.writeStringContent(key);
           this.writeString('": ');
           this.writeObject(value);
           first = false;
-        }).bind(this), dart.dynamic, [core.String, core.Object]));
+        }).bind(this), dart.void, [core.String, core.Object]));
         this.writeString('\n');
         this[_indentLevel] = dart.notNull(this[_indentLevel]) - 1;
         this.writeIndentation(this[_indentLevel]);
         this.writeString('}');
       }
     }
   }
   _JsonPrettyPrintMixin[dart.implements] = () => [_JsonStringifier];
   dart.setSignature(_JsonPrettyPrintMixin, {
     methods: () => ({
@@ skipping 1278 matching lines @@
           _JsonMap._setProperty(original, dart.as(key, core.String), null);
         }
       } else {
         this[_upgrade]().set(key, value);
       }
       return value;
     }
     addAll(other) {
       other.forEach(dart.fn(((key, value) => {
         this.set(key, value);
-      }).bind(this)));
+      }).bind(this), dart.void, [dart.dynamic, dart.dynamic]));
     }
     containsValue(value) {
       if (dart.notNull(this[_isUpgraded])) return this[_upgradedMap].containsValue(value);
       let keys = this[_computeKeys]();
       for (let i = 0; dart.notNull(i) < dart.notNull(keys[dartx.length]); i = dart.notNull(i) + 1) {
         let key = keys[dartx.get](i);
         if (dart.equals(this.get(key), value)) return true;
       }
       return false;
     }
@@ skipping 129 matching lines @@
   const _parent = Symbol('_parent');
   class _JsonMapKeyIterable extends _internal.ListIterable {
     _JsonMapKeyIterable(parent) {
       this[_parent] = parent;
       super.ListIterable();
     }
     get length() {
       return this[_parent].length;
     }
     elementAt(index) {
-      return dart.notNull(this[_parent][_isUpgraded]) ? dart.as(this[_parent].keys[dartx.elementAt](index), core.String) : this[_parent][_computeKeys]()[dartx.get](index);
+      return dart.as(dart.notNull(this[_parent][_isUpgraded]) ? this[_parent].keys[dartx.elementAt](index) : this[_parent][_computeKeys]()[dartx.get](index), core.String);
     }
     get iterator() {
-      return dart.notNull(this[_parent][_isUpgraded]) ? this[_parent].keys[dartx.iterator] : this[_parent][_computeKeys]()[dartx.iterator];
+      return dart.as(dart.notNull(this[_parent][_isUpgraded]) ? this[_parent].keys[dartx.iterator] : this[_parent][_computeKeys]()[dartx.iterator], core.Iterator);
     }
     contains(key) {
       return this[_parent].containsKey(key);
     }
   }
   dart.setSignature(_JsonMapKeyIterable, {
     constructors: () => ({_JsonMapKeyIterable: [_JsonMapKeyIterable, [_JsonMap]]}),
     methods: () => ({elementAt: [core.String, [core.int]]})
   });
   dart.defineExtensionMembers(_JsonMapKeyIterable, ['elementAt', 'contains', 'length', 'iterator']);
@@ skipping 49 matching lines @@
   exports.LineSplitter = LineSplitter;
   exports.StringConversionSink = StringConversionSink;
   exports.ClosableStringSink = ClosableStringSink;
   exports.UNICODE_REPLACEMENT_CHARACTER_RUNE = UNICODE_REPLACEMENT_CHARACTER_RUNE;
   exports.UNICODE_BOM_CHARACTER_RUNE = UNICODE_BOM_CHARACTER_RUNE;
   exports.Utf8Codec = Utf8Codec;
   exports.UTF8 = UTF8;
   exports.Utf8Encoder = Utf8Encoder;
   exports.Utf8Decoder = Utf8Decoder;
 });