Add a vmservice_sdk directory in runtime/bin.

tools/patch_sdk.dart

 #!/usr/bin/env dart
 // Copyright (c) 2015, 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.
 
 /// Command line tool to merge the SDK libraries and our patch files.
 /// This is currently designed as an offline tool, but we could automate it.
 
 import 'dart:io';
 import 'dart:isolate' show RawReceivePort;
@@ skipping 109 matching lines @@
       librariesJson.toFilePath(), JSON.encode({"libraries": locations}));
 
   if (forVm || forFlutter) {
     var vmserviceName = forVm ? 'vmservice_io' : 'vmservice_sky';
     var targetName = forVm ? 'vm_fasta' : 'flutter_fasta';
     Uri vmserviceUri = outDirUri.resolve('$vmserviceName.dill');
     await fasta.compilePlatform(outDirUri, platform,
         packages: packages,
         outlineOutput: outline,
         backendTarget: forVm ? 'vm_fasta' : 'flutter_fasta');
+    var base = path.fromUri(Platform.script);
+    Uri repositoryDir =
+        new Uri.directory(path.dirname(path.dirname(path.absolute(base))));
+    Uri vmserviceSdk = repositoryDir.resolve('runtime/bin/vmservice_sdk/');

[Siggi Cherem (dart-lang), 2017/06/15 17:43:39]

Sorry I didn't notice this earlier, I just realized this now that you rebased
the CL. This Uri here might not work when building in the flutter-engine repo.

I'm not sure that Alex is using this right now, so for now let's only call
`compile` below when `!forFlutter`.

[sivachandra, 2017/06/15 18:34:21]

How is it in patch set 3?

+    // TODO(sigmundch): Specify libraries.json directly instead of "--sdk"
+    // after #29882 is fixed.
     await fasta.compile([
-      "--sdk=$outDirUri",
+      "--sdk=$vmserviceSdk",
       "--platform=$outline",
       "--target=$targetName",
       "--packages=$packages",
       "dart:$vmserviceName",
       "-o",
       "$vmserviceUri",
     ]);
   } else {
     await dart2js.compilePlatform(outDirUri, platform,
         packages: packages, outlineOutput: outline);
@@ skipping 94 matching lines @@
 _copyExtraLibraries(String sdkOut, Map<String, String> locations) {
   if (forDart2js) return;
   var base = path.fromUri(Platform.script);
   var dartDir = path.dirname(path.dirname(path.absolute(base)));
 
   var builtinLibraryIn = path.join(dartDir, 'runtime', 'bin', 'builtin.dart');
   var builtinLibraryOut = path.join(sdkOut, '_builtin', '_builtin.dart');
   _writeSync(builtinLibraryOut, readInputFile(builtinLibraryIn));
   locations['_builtin'] = path.join('_builtin', '_builtin.dart');
 
-  for (var file in ['loader.dart', 'server.dart', 'vmservice_io.dart']) {
-    var libraryIn = path.join(dartDir, 'runtime', 'bin', 'vmservice', file);
-    var libraryOut = path.join(sdkOut, 'vmservice_io', file);
-    _writeSync(libraryOut, readInputFile(libraryIn));
-  }
-
-  locations[forVm ? "vmservice_io" : "vmservice_sky"] =
-      path.join('vmservice_io', 'vmservice_io.dart');
-  locations["_vmservice"] = path.join('vmservice', 'vmservice.dart');
-
   if (forFlutter) {
     // Flutter repo has this layout:
     //  engine/src/
     //       dart/
     //       flutter/
     var srcDir = path.dirname(path.dirname(path.dirname(path.absolute(base))));
     var uiLibraryInDir = path.join(srcDir, 'flutter', 'lib', 'ui');
     for (var file in new Directory(uiLibraryInDir).listSync()) {
       if (!file.path.endsWith('.dart')) continue;
       var name = path.basename(file.path);
@@ skipping 410 matching lines @@
     if (diff != 0) return diff;
     return end - other.end;
   }
 }
 
 List<SdkLibrary> _getSdkLibraries(String contents) {
   var libraryBuilder = new SdkLibrariesReader_LibraryBuilder(forDart2js);
   parseCompilationUnit(contents).accept(libraryBuilder);
   return libraryBuilder.librariesMap.sdkLibraries;
 }