Read platform.dill in the VM.

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

Index: pkg/front_end/lib/src/fasta/fasta.dart
diff --git a/pkg/front_end/lib/src/fasta/fasta.dart b/pkg/front_end/lib/src/fasta/fasta.dart
index dd56cebac4f7a01111bfe52720e13e512ae6d52e..c5b90295b0cd8665f156200d0d802a6f4764d506 100644
--- a/pkg/front_end/lib/src/fasta/fasta.dart
+++ b/pkg/front_end/lib/src/fasta/fasta.dart
@@ -12,6 +12,8 @@ import 'dart:io' show BytesBuilder, Directory, File, exitCode;
 
 import 'package:kernel/binary/ast_to_binary.dart' show BinaryPrinter;
 
+import 'package:kernel/binary/tag.dart' show Tag;
+
 import 'package:kernel/kernel.dart' show Program;
 
 import 'package:kernel/target/targets.dart' show Target, TargetFlags, getTarget;
@@ -150,6 +152,23 @@ class CompileTask {
   }
 }
 
+class FrontEndBinaryPrinter extends BinaryPrinter {

[Kevin Millikin (Google), 2017/03/31 10:05:42]

This is hacky and I'm sure there is a better way.  I'll figure out what we
really want to do for now before committing.

[ahe, 2017/03/31 10:13:09]

I think this would be a better fit for the "kernel" subdirectory.

[ahe, 2017/03/31 10:13:09]

How about renaming this FilteringBinaryPrinter and add this method:

bool includeLibrary(Library library) => !library.importUri.isScheme('dart');

+  FrontEndBinaryPrinter(Sink<List<int>> sink) : super(sink);
+
+  void writeProgramFile(Program program) {
+    program.computeCanonicalNames();
+    writeMagicWord(Tag.ProgramFile);
+    stringIndexer.scanProgram(program);
+    writeStringTable(stringIndexer);
+    writeUriToSource(program);
+    writeLinkTable(program);
+    writeList(program.libraries.where((lib) => !lib.importUri.isScheme('dart')),
+        writeNode);
+    writeMemberReference(program.mainMethod, allowNull: true);
+    flush();
+  }
+}
+
 Future<CompilationResult> parseScript(
     Uri fileName, Uri packages, Uri patchedSdk, bool verbose) async {
   try {
@@ -191,7 +210,7 @@ Future<CompilationResult> parseScript(
 
     // Write the program to a list of bytes and return it.
     var sink = new ByteSink();
-    new BinaryPrinter(sink).writeProgramFile(program);
+    new FrontEndBinaryPrinter(sink).writeProgramFile(program);
     return new CompilationResult.ok(sink.builder.takeBytes());
   } catch (e, s) {
     return reportCrash(e, s, fileName);