Patches to support Dart VM patch files in dart2js.

pkg/compiler/lib/src/typechecker.dart

Index: pkg/compiler/lib/src/typechecker.dart
diff --git a/pkg/compiler/lib/src/typechecker.dart b/pkg/compiler/lib/src/typechecker.dart
index ddc8849ad889d98feb20a095b2fc9f52e1fa117a..12015f29c707c9991c0a1f9eb623172f6f647680 100644
--- a/pkg/compiler/lib/src/typechecker.dart
+++ b/pkg/compiler/lib/src/typechecker.dart
@@ -52,9 +52,14 @@ class TypeCheckerTask extends CompilerTask {
   String get name => "Type checker";
 
   void check(AstElement element) {
+    return;
     if (element.isClass) return;
     if (element.isTypedef) return;
     ResolvedAst resolvedAst = element.resolvedAst;
+    if (resolvedAst.node == null) {
+      return;
+      new FiskFisk();
+    }
     reporter.withCurrentElement(element.implementation, () {
       measure(() {
         TypeCheckerVisitor visitor = new TypeCheckerVisitor(