Strong html

tools/dom/templates/html/impl/impl_Element.darttemplate

Index: tools/dom/templates/html/impl/impl_Element.darttemplate
diff --git a/tools/dom/templates/html/impl/impl_Element.darttemplate b/tools/dom/templates/html/impl/impl_Element.darttemplate
index fd4fae2f01c9926ff9870dad31e7663ed70c4a46..599eaf896458b524d153375fec5a1f0640d756f6 100644
--- a/tools/dom/templates/html/impl/impl_Element.darttemplate
+++ b/tools/dom/templates/html/impl/impl_Element.darttemplate
@@ -71,7 +71,7 @@ class _ChildrenElementList extends ListBase<Element>
     _filter(test, true);
   }
 
-  void _filter(bool test(var element), bool retainMatching) {
+  void _filter(bool test(Element element), bool retainMatching) {
     var removed;
     if (retainMatching) {
       removed = _element.children.where((e) => !test(e));
@@ -593,7 +593,7 @@ $endif
 
   set children(List<Element> value) {
     // Copy list first since we don't want liveness during iteration.
-    List copy = new List.from(value);
+    var copy = value.toList();
     var children = this.children;
     children.clear();
     children.addAll(copy);
@@ -828,19 +828,18 @@ $endif
       throw new ArgumentError("The frames parameter should be a List of Maps "
           "with frame information");
     }
-    var convertedFrames = frames;
-    if (convertedFrames is Iterable) {
+    var convertedFrames;
+    if (frames is Iterable) {
 $if DART2JS
       convertedFrames = frames.map(convertDartToNative_Dictionary).toList();
 $else
       convertedFrames = convertDartToNative_List(
           frames.map(convertDartToNative_Dictionary).toList());
 $endif
+    } else {
+      convertedFrames = frames;
     }
-    var convertedTiming = timing;
-    if (convertedTiming is Map) {
-      convertedTiming = convertDartToNative_Dictionary(convertedTiming);
-    }
+    var convertedTiming = timing is Map ? convertDartToNative_Dictionary(timing) : timing;
     return convertedTiming == null
       ? _animate(convertedFrames)
       : _animate(convertedFrames, convertedTiming);