Merging dart:html interfaces and implementations

sdk/lib/html/templates/html/impl/impl_HttpRequest.darttemplate

Index: sdk/lib/html/templates/html/impl/impl_HttpRequest.darttemplate
diff --git a/sdk/lib/html/templates/html/impl/impl_HttpRequest.darttemplate b/sdk/lib/html/templates/html/impl/impl_HttpRequest.darttemplate
new file mode 100644
index 0000000000000000000000000000000000000000..cfc265e7da140c5581a8d398603f6ad1acfcdca8
--- /dev/null
+++ b/sdk/lib/html/templates/html/impl/impl_HttpRequest.darttemplate
@@ -0,0 +1,13 @@
+// Copyright (c) 2012, 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.
+
+class $CLASSNAME$EXTENDS$IMPLEMENTS$NATIVESPEC {
+  factory $CLASSNAME.get(String url, onSuccess($CLASSNAME request)) =>
+      _$(CLASSNAME)FactoryProvider.create$(CLASSNAME)_get(url, onSuccess);
+
+  factory $CLASSNAME.getWithCredentials(String url, onSuccess($CLASSNAME request)) =>
+      _$(CLASSNAME)FactoryProvider.create$(CLASSNAME)getWithCredentials(url, onSuccess);
+
+$!MEMBERS
+}