Change core lib, dart2js, and more for new optional parameters syntax

lib/compiler/implementation/diagnostic_listener.dart

Index: lib/compiler/implementation/diagnostic_listener.dart
===================================================================
--- lib/compiler/implementation/diagnostic_listener.dart	(revision 13683)
+++ lib/compiler/implementation/diagnostic_listener.dart	(working copy)
@@ -4,15 +4,15 @@
 
 abstract class DiagnosticListener {
   // TODO(karlklose): replace cancel with better error reporting mechanism.
-  void cancel([String reason, node, token, instruction, element]);
+  void cancel(String reason, {node, token, instruction, element});
   // TODO(karlklose): rename log to something like reportInfo.
   void log(message);
   // TODO(karlklose): add reportWarning and reportError to this interface.
 
   void internalErrorOnElement(Element element, String message);
   void internalError(String message,
-                     [Node node, Token token, HInstruction instruction,
-                      Element element]);
+                     {Node node, Token token, HInstruction instruction,
+                      Element element});
 
   SourceSpan spanFromNode(Node node, [Uri uri]);