Apply transformers and other work arounds to get boostrapping to work.

pkg/front_end/lib/src/fasta/kernel/kernel_target.dart

 // Copyright (c) 2016, 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.
 
 library fasta.kernel_target;
 
 import 'dart:async' show Future;
 
 import 'dart:io' show File, IOSink;
 
@@ skipping 23 matching lines @@
         SuperInitializer,
         Throw,
         VariableDeclaration,
         VariableGet,
         VoidType;
 
 import 'package:kernel/binary/ast_to_binary.dart' show BinaryPrinter;
 
 import 'package:kernel/text/ast_to_text.dart' show Printer;
 
+import 'package:kernel/transformations/erasure.dart' show Erasure;
+
+import 'package:kernel/transformations/continuation.dart' as transformAsync;
+
 import 'package:kernel/transformations/mixin_full_resolution.dart'
     show MixinFullResolution;
 
 import 'package:kernel/transformations/setup_builtin_library.dart'
     as setup_builtin_library;
 
 import '../source/source_loader.dart' show SourceLoader;
 
 import '../source/source_class_builder.dart' show SourceClassBuilder;
 
@@ skipping 158 matching lines @@
     }
     try {
       loader.computeHierarchy(program);
       await loader.buildBodies();
       loader.finishStaticInvocations();
       finishAllConstructors();
       loader.finishNativeMethods();
       transformMixinApplications();
       // TODO(ahe): Don't call this from two different places.
       setup_builtin_library.transformProgram(program);
+      otherTransformations();
       errors.addAll(loader.collectCompileTimeErrors().map((e) => e.format()));
       if (errors.isNotEmpty) {
         return handleInputError(uri, null, isFullProgram: true);
       }
       if (uri == null) return program;
       return await writeLinkedProgram(uri, program, isFullProgram: true);
     } on InputError catch (e) {
       return handleInputError(uri, e, isFullProgram: true);
     } catch (e, s) {
       return reportCrash(e, s, loader?.currentUriForCrashReporting);
@@ skipping 310 matching lines @@
         }
       }
     });
   }
 
   void transformMixinApplications() {
     new MixinFullResolution().transform(program);
     ticker.logMs("Transformed mixin applications");
   }
 
+  void otherTransformations() {
+    // TODO(ahe): Don't generate type variables in the first place.
+    program.accept(new Erasure());
+    ticker.logMs("Erased type variables in generic methods");
+    // TODO(kmillikin): Make this run on a per-method basis.
+    transformAsync.transformProgram(program);
+    ticker.logMs("Transformed async methods");
+  }
+
   void dumpIr() {
     StringBuffer sb = new StringBuffer();
     for (Library library in loader.libraries) {
       Printer printer = new Printer(sb);
       printer.writeLibraryFile(library);
     }
     print("$sb");
   }
 }
 
@@ skipping 17 matching lines @@
   }
   for (Constructor constructor in superclass.constructors) {
     if (constructor.name.name.isEmpty) {
       return constructor.function.requiredParameterCount == 0
           ? constructor
           : null;
     }
   }
   return null;
 }