- Add getters for the current packageRoot or packageMap.

tests/standalone/io/code_collection_test.dart

Index: tests/standalone/io/code_collection_test.dart
diff --git a/tests/standalone/io/code_collection_test.dart b/tests/standalone/io/code_collection_test.dart
index 696be6e024d2e93222e527eb7eddccb9d74280b5..bf28613dd38f4e58b8cdd37d775ddebde51ed91a 100644
--- a/tests/standalone/io/code_collection_test.dart
+++ b/tests/standalone/io/code_collection_test.dart
@@ -42,18 +42,19 @@ doTest() {
 }
 
 
-main(List<String> arguments) {
+main(List<String> arguments) async {
   if (arguments.contains("--run")) {
     doTest();
   } else {
     // Run the test and capture stdout.
+    var packageRoot = await Platform.packageRoot;
     var pr = Process.runSync(Platform.executable,
         ["--collect-code",
          "--code-collection-interval-in-us=0",
          "--old_gen_growth_rate=10",
          "--log-code-drop",
          "--optimization-counter-threshold=-1",
-         "--package-root=${Platform.packageRoot}",
+         "--package-root=$packageRoot",
          Platform.script.toFilePath(),
          "--run"]);