Add support for building patched_sdk and platform.dill for dart2js:

pkg/kernel/test/closures/suite.dart

Index: pkg/kernel/test/closures/suite.dart
diff --git a/pkg/kernel/test/closures/suite.dart b/pkg/kernel/test/closures/suite.dart
index 72c1c37f73a9372ccbdeff82bd1ad077d560566f..eeb1927582b983d1d63b754a7701407f8704ff05 100644
--- a/pkg/kernel/test/closures/suite.dart
+++ b/pkg/kernel/test/closures/suite.dart
@@ -115,12 +115,13 @@ class FastaCompile
       TestDescription description, ClosureConversionContext context) async {
     Program platform = await context.createPlatform();
     Ticker ticker = new Ticker();
-    DillTarget dillTarget = new DillTarget(ticker, context.uriTranslator);
+    DillTarget dillTarget =
+        new DillTarget(ticker, context.uriTranslator, false);
     dillTarget.loader
       ..input = Uri.parse("org.dartlang:platform") // Make up a name.
       ..setProgram(platform);
     KernelTarget sourceTarget =
-        new KernelTarget(dillTarget, context.uriTranslator, false);
+        new KernelTarget(dillTarget, context.uriTranslator, false, false);
 
     Program p;
     try {