sdk/lib/html/dartium/html_dartium.dart

Index: sdk/lib/html/dartium/html_dartium.dart
diff --git a/sdk/lib/html/dartium/html_dartium.dart b/sdk/lib/html/dartium/html_dartium.dart
index d02574c021a53c5d27e6020966f9ae94184d56aa..2f4a16b9f53778ae41a77bfe4424c8c10db9f6d6 100644
--- a/sdk/lib/html/dartium/html_dartium.dart
+++ b/sdk/lib/html/dartium/html_dartium.dart
@@ -23487,8 +23487,12 @@ class _ChildNodeListLazy extends ListBase<Node> implements NodeListWrapper {
   }
 
   void insertAll(int index, Iterable<Node> iterable) {
-    var item = this[index];
-    _this.insertAllBefore(iterable, item);
+    if (index == length) {
+      addAll(iterable);
+    } else {
+      var item = this[index];
+      _this.insertAllBefore(iterable, item);
+    }
   }
 
   void setAll(int index, Iterable<Node> iterable) {
@@ -31073,12 +31077,12 @@ class Url extends NativeFieldWrapperClass2 implements UrlUtils {
     if ((blob_OR_source_OR_stream is Blob || blob_OR_source_OR_stream == null)) {
       return _blink.BlinkURL.createObjectURL_Callback_Blob(blob_OR_source_OR_stream);
     }
-    if ((blob_OR_source_OR_stream is MediaStream)) {
-      return _blink.BlinkURL.createObjectURL_Callback_MediaStream(blob_OR_source_OR_stream);
-    }
     if ((blob_OR_source_OR_stream is MediaSource)) {
       return _blink.BlinkURL.createObjectURL_Callback_MediaSource(blob_OR_source_OR_stream);
     }
+    if ((blob_OR_source_OR_stream is MediaStream)) {
+      return _blink.BlinkURL.createObjectURL_Callback_MediaStream(blob_OR_source_OR_stream);
+    }
     throw new ArgumentError("Incorrect number or type of arguments");
   }