Use the correct sources for dartium in patched_sdk for vm

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 76 matching lines @@
   var patchIn = argv[2];
   var outDir = argv[3];
   var outDirUri = Uri.base.resolveUri(new Uri.directory(outDir));
   var sdkOut = path.join(outDir, 'lib');
   var packagesFile = argv[4];
 
   // Parse libraries.dart
   var libContents = readInputFile(path.join(
       sdkLibIn, '_internal', 'sdk_library_metadata', 'lib', 'libraries.dart'));
   if (forVm) libContents = _updateLibraryMetadata(sdkOut, libContents);
-  var sdkLibraries = _getSdkLibraries(libContents);
+  var sdkLibraries = _getSdkLibraries(libContents, forDart2js);
 
   Map<String, String> locations = <String, String>{};
 
   // Enumerate core libraries and apply patches
   for (SdkLibrary library in sdkLibraries) {
     if (forDart2js && library.isVmLibrary) continue;
     if (forVm && library.isDart2JsLibrary) continue;
     _applyPatch(library, sdkLibIn, patchIn, sdkOut, locations);
   }
 
@@ skipping 509 matching lines @@
 
   String toString() => '(Edit @ $begin,$end: "$replace")';
 
   int compareTo(_StringEdit other) {
     int diff = begin - other.begin;
     if (diff != 0) return diff;
     return end - other.end;
   }
 }
 
-List<SdkLibrary> _getSdkLibraries(String contents) {
-  var libraryBuilder = new SdkLibrariesReader_LibraryBuilder(true);
+List<SdkLibrary> _getSdkLibraries(String contents, bool useDart2js) {
+  var libraryBuilder = new SdkLibrariesReader_LibraryBuilder(useDart2js);
   parseCompilationUnit(contents).accept(libraryBuilder);
   return libraryBuilder.librariesMap.sdkLibraries;
 }