Move getters from Options to Platform

sdk/lib/_internal/pub/test/test_pub.dart

Index: sdk/lib/_internal/pub/test/test_pub.dart
diff --git a/sdk/lib/_internal/pub/test/test_pub.dart b/sdk/lib/_internal/pub/test/test_pub.dart
index 4813ee48d0a3fdd20afdff0e0df4801257f860fa..86a2a258ed428d610d4f43eaf495bb5970397fa0 100644
--- a/sdk/lib/_internal/pub/test/test_pub.dart
+++ b/sdk/lib/_internal/pub/test/test_pub.dart
@@ -436,7 +436,7 @@ ScheduledProcess startPub({List args, Future<Uri> tokenEndpoint}) {
 
   // Find a Dart executable we can use to spawn. Use the same one that was
   // used to run this script itself.
-  var dartBin = new Options().executable;
+  var dartBin = Platform.executable;
 
   // If the executable looks like a path, get its full path. That way we
   // can still find it when we spawn it with a different working directory.
@@ -556,7 +556,7 @@ class PubProcess extends ScheduledProcess {
 /// The path to the `packages` directory from which pub loads its dependencies.
 String get _packageRoot {
   return path.absolute(path.join(
-      path.dirname(new Options().executable), '..', '..', 'packages'));
+      path.dirname(Platform.executable), '..', '..', 'packages'));
 }
 
 /// Skips the current test if Git is not installed. This validates that the