Add type parameters to methods in typed-data patch.

runtime/lib/typed_data_patch.dart

 // Copyright (c) 2013, 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.
 
 import "dart:_internal" hide Symbol;
 import "dart:collection" show ListBase;
 import 'dart:math' show Random;
 
 @patch
 class ByteData implements TypedData {
@@ skipping 41 matching lines @@
     var len = this.length;
     if (len == 0) throw IterableElementError.noElement();
     var i = 0;
     var value = this[0];
     for (var i = 1; i < len; ++i) {
       value = combine(value, this[i]);
     }
     return value;
   }
 
-  dynamic fold(
-      dynamic initialValue, dynamic combine(dynamic initialValue, element)) {
+  T fold<T>(T initialValue, T combine(T initialValue, element)) {
     var len = this.length;
     for (var i = 0; i < len; ++i) {
       initialValue = combine(initialValue, this[i]);
     }
     return initialValue;
   }
 
-  Iterable map(f(element)) => new MappedIterable(this, f);
+  Iterable<T> map<T>(T f(element)) => new MappedIterable<dynamic, T>(this, f);
 
-  Iterable expand(Iterable f(element)) => new ExpandIterable(this, f);
+  Iterable<T> expand<T>(Iterable<T> f(element)) =>
+      new ExpandIterable<dynamic, T>(this, f);
 
   bool every(bool f(element)) {
     var len = this.length;
     for (var i = 0; i < len; ++i) {
       if (!f(this[i])) return false;
     }
     return true;
   }
 
   bool any(bool f(element)) {
@@ skipping 2992 matching lines @@
         'BYTES_PER_ELEMENT ($alignment)');
   }
 }
 
 int _defaultIfNull(object, value) {
   if (object == null) {
     return value;
   }
   return object;
 }