- Fix the no_snapshot build.

runtime/bin/builtin.dart

Index: runtime/bin/builtin.dart
===================================================================
--- runtime/bin/builtin.dart	(revision 7495)
+++ runtime/bin/builtin.dart	(working copy)
@@ -3,7 +3,6 @@
 // BSD-style license that can be found in the LICENSE file.
 
 #library("builtin");
-#import("dart:uri");
 
 void print(arg) {
   _Logger._printString(arg.toString());
@@ -30,10 +29,10 @@
 
 // The URI that the entrypoint script was loaded from. Remembered so that
 // package imports can be resolved relative to it.
-Uri _entrypoint;
+var _entrypoint;
 
 // The directory to look in to resolve "package:" scheme URIs.
-String _packageRoot;
+var _packageRoot;
 
 void _logResolution(String msg) {
   final enabled = false;