Move kernel baseline tests to front_end.

pkg/front_end/lib/src/fasta/compile_platform.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.compile_platform;
 
 import 'dart:async' show Future;
 
 import 'ticker.dart' show Ticker;
 
@@ skipping 33 matching lines @@
   await CompilerCommandLine.withGlobalOptions("compile_platform", arguments,
       (CompilerContext c) {
     Uri patchedSdk = Uri.base.resolveUri(new Uri.file(c.options.arguments[0]));
     Uri output = Uri.base.resolveUri(new Uri.file(c.options.arguments[1]));
     return compilePlatformInternal(c, ticker, patchedSdk, output);
   });
 }
 
 Future compilePlatformInternal(
     CompilerContext c, Ticker ticker, Uri patchedSdk, Uri output) async {
+  if (c.options.strongMode) {
+    print("Note: strong mode support is preliminary and may not work.");
+  }
   ticker.isVerbose = c.options.verbose;
   Uri deps = Uri.base.resolveUri(new Uri.file("${output.toFilePath()}.d"));
   ticker.logMs("Parsed arguments");
   if (ticker.isVerbose) {
     print("Compiling $patchedSdk to $output");
   }
 
   TranslateUri uriTranslator =
       await TranslateUri.parse(patchedSdk, c.options.packages);
   ticker.logMs("Read packages file");
 
   DillTarget dillTarget = new DillTarget(ticker, uriTranslator);
-  KernelTarget kernelTarget =
-      new KernelTarget(dillTarget, uriTranslator, c.uriToSource);
+  KernelTarget kernelTarget = new KernelTarget(
+      dillTarget, uriTranslator, c.options.strongMode, c.uriToSource);
 
   kernelTarget.read(Uri.parse("dart:core"));
   await dillTarget.writeOutline(null);
   await kernelTarget.writeOutline(output);
 
   if (exitCode != 0) return null;
   await kernelTarget.writeProgram(output,
       dumpIr: c.options.dumpIr, verify: c.options.verify);
   await kernelTarget.writeDepsFile(output, deps);
 }