Allow multiple-entry libraries in code_transformers

pkg/code_transformers/lib/src/dart_sdk.dart

 // Copyright (c) 2014, 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 code_transformers.src.dart_sdk;
 
 import 'dart:convert' as convert;
 import 'dart:io' show Directory, File, Platform, Process;
 import 'package:path/path.dart' as path;
 
@@ skipping 29 matching lines @@
 
   var parts = path.split(dartDir);
   // If the dart executable is within the sdk dir then get the root.
   if (parts.contains('dart-sdk')) {
     var dartSdkDir = path.joinAll(parts.take(parts.indexOf('dart-sdk') + 1));
     if (isSdkDir(dartSdkDir)) return dartSdkDir;
   }
 
   return null;
 }
+
+/// Variant of [dartSdkDirectory] which includes additional cases only
+/// typically encountered in Dart's testing environment.
+String get testingDartSdkDirectory {

[Siggi Cherem (dart-lang), 2014/03/14 21:31:43]

i just copied this from your CL, but I don't plan to submit it until you do (I
was just using it locally for my other cls)

+  var sdkDir = dartSdkDirectory;
+  if (sdkDir == null) {
+    // If we cannot find the SDK dir, then assume this is being run from Dart's
+    // source directory and this script is the main script.
+    sdkDir = path.join(
+        path.dirname(path.fromUri(Platform.script)), '..', '..', '..', 'sdk');
+  }
+  return sdkDir;
+}