Generate all runtime files from dart.

tool/input_sdk/private/js_rti.dart

Index: tool/input_sdk/private/js_rti.dart
diff --git a/tool/input_sdk/private/js_rti.dart b/tool/input_sdk/private/js_rti.dart
index 5016454e2db54f60997c157aae15f3cb7a172c12..e3e304c5903724855aea4b865aef44d568701340 100644
--- a/tool/input_sdk/private/js_rti.dart
+++ b/tool/input_sdk/private/js_rti.dart
@@ -11,17 +11,17 @@ Type getRuntimeType(var object) =>
 
 /// Returns the property [index] of the JavaScript array [array].
 getIndex(var array, int index) {
-  assert(isJsArray(array));
+  assert_(isJsArray(array));
   return JS('var', r'#[#]', array, index);
 }
 
 /// Returns the length of the JavaScript array [array].
 int getLength(var array) {
-  assert(isJsArray(array));
+  assert_(isJsArray(array));
   return JS('int', r'#.length', array);
 }
 
 /// Returns whether [value] is a JavaScript array.
 bool isJsArray(var value) {
   return value is JSArray;
-}
+}