Run closed_world2_test using the normal compiler pipeline.

pkg/compiler/lib/src/deferred_load.dart

Index: pkg/compiler/lib/src/deferred_load.dart
diff --git a/pkg/compiler/lib/src/deferred_load.dart b/pkg/compiler/lib/src/deferred_load.dart
index 66e73c309adc9454905ccbf67559661f267a9644..3500f9869c15a80708c32410978b80f3c163f279 100644
--- a/pkg/compiler/lib/src/deferred_load.dart
+++ b/pkg/compiler/lib/src/deferred_load.dart
@@ -661,7 +661,7 @@ class DeferredLoadTask extends CompilerTask {
     }
   }
 
-  void onResolutionComplete(FunctionElement main) {
+  void onResolutionComplete(MethodElement main) {
     if (!isProgramSplit) {
       allOutputUnits.add(mainOutputUnit);
       return;
@@ -677,8 +677,7 @@ class DeferredLoadTask extends CompilerTask {
         () => measure(() {
               // Starting from main, traverse the program and find all
               // dependencies.
-              _mapDependencies(
-                  element: compiler.mainFunction, import: _fakeMainImport);
+              _mapDependencies(element: main, import: _fakeMainImport);
 
               // Also add "global" dependencies to the main OutputUnit.  These
               // are things that the backend needs but cannot associate with a
@@ -771,6 +770,8 @@ class DeferredLoadTask extends CompilerTask {
 
   void beforeResolution(Compiler compiler) {
     if (compiler.mainApp == null) return;
+    // TODO(johnniwinther): Support deferred load for kernel based elements.
+    if (compiler.mainApp is! LibraryElement) return;

[Siggi Cherem (dart-lang), 2017/04/26 16:39:18]

to make this easier to read, I'd switch this to:

if (compiler.options.loadDill) return; 

[Johnni Winther, 2017/04/27 06:50:14]

Done.

     _allDeferredImports[_fakeMainImport] = compiler.mainApp;
     var lastDeferred;
     // When detecting duplicate prefixes of deferred libraries there are 4