Add LibraryLoader.resetAsync.

dart/sdk/lib/_internal/compiler/implementation/compiler.dart

 // 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.
 
 part of dart2js;
 
 /**
  * If true, print a warning for each method that was resolved, but not
  * compiled.
  */
@@ skipping 1970 matching lines @@
     if (libraryUri.scheme == 'package') {
       int slashPos = libraryUri.path.indexOf('/');
       if (slashPos != -1) {
         String packageName = libraryUri.path.substring(0, slashPos);
         return new Uri(scheme: 'package', path: packageName);
       }
     }
     return libraryUri;
   }
 
+  void diagnoseCrashInUserCode(String message, exception, stackTrace) {
+    // Overridden by Compiler in apiimpl.dart.
+  }
 }
 
 class CompilerTask {
   final Compiler compiler;
   final Stopwatch watch;
   UserTag profilerTag;
 
   CompilerTask(Compiler compiler)
       : this.compiler = compiler,
         watch = (compiler.verbose) ? new Stopwatch() : null;
@@ skipping 125 matching lines @@
   int warnings = 0;
   int hints = 0;
 }
 
 class GenericTask extends CompilerTask {
   final String name;
 
   GenericTask(this.name, Compiler compiler)
       : super(compiler);
 }