Read platform.dill in the VM.

pkg/front_end/lib/src/fasta/fasta.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;
 
 import 'dart:async' show Future;
 
 import 'dart:convert' show JSON;
 
 import 'dart:io' show BytesBuilder, Directory, File, exitCode;
 
-import 'package:kernel/binary/ast_to_binary.dart' show BinaryPrinter;
+import 'package:kernel/binary/ast_to_binary.dart'
+    show LibraryFilteringBinaryPrinter;
 
 import 'package:kernel/kernel.dart' show Program;
 
 import 'package:kernel/target/targets.dart' show Target, TargetFlags, getTarget;
 
 import 'compiler_command_line.dart' show CompilerCommandLine;
 
 import 'compiler_context.dart' show CompilerContext;
 
 import 'errors.dart' show InputError, formatUnexpected, inputError, reportCrash;
@@ skipping 168 matching lines @@
     }
 
     if (program.mainMethod == null) {
       return new CompilationResult.error("No 'main' method found.");
     }
 
     // Perform target-specific transformations.
     target.performModularTransformations(program);
     target.performGlobalTransformations(program);
 
-    // Write the program to a list of bytes and return it.
+    // Write the program to a list of bytes and return it.  Do not include
+    // libraries that have a dart: import URI.
+    //
+    // TODO(kmillikin): This is intended to exclude platform libraries that are
+    // included in the Kernel binary platform platform.dill.  It does not
+    // necessarily exclude exactly the platform libraries.  Use a better
+    // predicate that knows what is included in platform.dill.
     var sink = new ByteSink();
-    new BinaryPrinter(sink).writeProgramFile(program);
+    bool predicate(Library library) => !library.importUri.isScheme('dart');
+    new LibraryFilteringBinaryPrinter(sink, predicate)
+        .writeProgramFile(program);
     return new CompilationResult.ok(sink.builder.takeBytes());
   } catch (e, s) {
     return reportCrash(e, s, fileName);
   }
 }
 
 Future compilePlatform(Uri patchedSdk, Uri output,
     {Uri packages, bool verbose: false}) async {
   Ticker ticker = new Ticker(isVerbose: verbose);
   await CompilerCommandLine.withGlobalOptions("", [""], (CompilerContext c) {
@@ skipping 39 matching lines @@
   final BytesBuilder builder = new BytesBuilder();
 
   void add(List<int> data) {
     builder.add(data);
   }
 
   void close() {
     // Nothing to do.
   }
 }