Teach dart_package to understand the packages/ subdirectory

third_party/dart-packages/stack_trace/stack_trace/src/utils.dart

Index: third_party/dart-packages/stack_trace/stack_trace/src/utils.dart
diff --git a/third_party/dart-packages/stack_trace/stack_trace/src/utils.dart b/third_party/dart-packages/stack_trace/stack_trace/src/utils.dart
deleted file mode 100644
index 62a282085662d84baf6db0b38e3dc669c838f4ea..0000000000000000000000000000000000000000
--- a/third_party/dart-packages/stack_trace/stack_trace/src/utils.dart
+++ /dev/null
@@ -1,36 +0,0 @@
-// Copyright (c) 2013, 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 stack_trace.src.utils;
-
-/// Returns [string] with enough spaces added to the end to make it [length]
-/// characters long.
-String padRight(String string, int length) {
-  if (string.length >= length) return string;
-
-  var result = new StringBuffer();
-  result.write(string);
-  for (var i = 0; i < length - string.length; i++) {
-    result.write(' ');
-  }
-
-  return result.toString();
-}
-
-/// Flattens nested lists inside an iterable into a single list containing only
-/// non-list elements.
-List flatten(Iterable nested) {
-  var result = [];
-  helper(list) {
-    for (var element in list) {
-      if (element is List) {
-        helper(element);
-      } else {
-        result.add(element);
-      }
-    }
-  }
-  helper(nested);
-  return result;
-}