Remove dart:_vmservice and dart:vmservice_io from platform.dill.

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 150 matching lines @@
       "_builtin/_builtin.dart",
       categories: "Client,Server",
       implementation: true,
       documented: false,
       platforms: VM_PLATFORM),
 
   "profiler": const LibraryInfo(
       "profiler/profiler.dart",
       maturity: Maturity.DEPRECATED,
       documented: false),
-
-  "_vmservice": const LibraryInfo(
-      "vmservice/vmservice.dart",
-      implementation: true,
-      documented: false,
-      platforms: VM_PLATFORM),
-
-  "vmservice_io": const LibraryInfo(
-      "vmservice_io/vmservice_io.dart",
-      implementation: true,
-      documented: false,
-      platforms: VM_PLATFORM),
-
 ''');
   _writeSync(
       path.join(
           sdkOut, '_internal', 'sdk_library_metadata', 'lib', 'libraries.dart'),
       libContents);
   return libContents;
 }
 
 /// Copy internal libraries that are developed under 'runtime/bin/' to the
 /// patched_sdk folder.
@@ skipping 13 matching lines @@
     _writeSync(builtinLibraryOut, readInputFile(builtinLibraryIn));
     locations[vmLibrary] = path.join(vmLibrary, '${vmLibrary}.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["vmservice_io"] = "vmservice_io/vmservice_io.dart";
+  locations["_vmservice"] = "vmservice/vmservice.dart";
 }
 
 _applyPatch(SdkLibrary library, String sdkLibIn, String patchIn, String sdkOut,
     Map<String, String> locations) {
   var libraryOut = path.join(sdkLibIn, library.path);
   var libraryIn = libraryOut;
 
   var libraryFile = getInputFile(libraryIn, canBeMissing: true);
   if (libraryFile != null) {
     locations[Uri.parse(library.shortName).path] =
@@ skipping 395 matching lines @@
     if (diff != 0) return diff;
     return end - other.end;
   }
 }
 
 List<SdkLibrary> _getSdkLibraries(String contents, bool useDart2js) {
   var libraryBuilder = new SdkLibrariesReader_LibraryBuilder(useDart2js);
   parseCompilationUnit(contents).accept(libraryBuilder);
   return libraryBuilder.librariesMap.sdkLibraries;
 }