Add back unseparated out version of method overloads in dart:html.

sdk/lib/html/dart2js/html_dart2js.dart

Index: sdk/lib/html/dart2js/html_dart2js.dart
diff --git a/sdk/lib/html/dart2js/html_dart2js.dart b/sdk/lib/html/dart2js/html_dart2js.dart
index 293f66ac2c067a1d71584860b046005ff97dd98c..eef7e97a92a8d7e44478a0894adf9ca3eb8f098a 100644
--- a/sdk/lib/html/dart2js/html_dart2js.dart
+++ b/sdk/lib/html/dart2js/html_dart2js.dart
@@ -21391,16 +21391,16 @@ class SourceBuffer extends EventTarget native "SourceBuffer" {
   @Experimental() // untriaged
   void appendBuffer(ByteBuffer data) native;
 
-  @JSName('appendBuffer')
-  @DomName('SourceBuffer.appendBuffer')
+  @DomName('SourceBuffer.appendStream')
   @DocsEditable()
   @Experimental() // untriaged
-  void appendBufferView(TypedData data) native;
+  void appendStream(FileStream stream, [int maxSize]) native;
 
-  @DomName('SourceBuffer.appendStream')
+  @JSName('appendBuffer')
+  @DomName('SourceBuffer.appendBuffer')
   @DocsEditable()
   @Experimental() // untriaged
-  void appendStream(FileStream stream, [int maxSize]) native;
+  void appendTypedData(TypedData data) native;
 
   @DomName('SourceBuffer.remove')
   @DocsEditable()