patch_sdk: fix part/import order

test/generated_sdk/lib/collection/collection.dart

Index: test/generated_sdk/lib/collection/collection.dart
diff --git a/test/generated_sdk/lib/collection/collection.dart b/test/generated_sdk/lib/collection/collection.dart
index 79cace214f469b570636ec4e0fe289296d4bb52d..4c6ab59bc0e7ea2e94c6f15d85f69a1793d870a9 100644
--- a/test/generated_sdk/lib/collection/collection.dart
+++ b/test/generated_sdk/lib/collection/collection.dart
@@ -8,7 +8,10 @@
 library dart.collection;
 
 import 'dart:_internal';
-import 'dart:math' show Random;  // Used by ListMixin.shuffle.
+import 'dart:math' show Random;
+import 'dart:_foreign_helper' show JS;
+import 'dart:_js_helper' show
+    fillLiteralMap, InternalMap, NoInline, NoThrows, patch;  // Used by ListMixin.shuffle.
 
 part 'collections.dart';
 part 'hash_map.dart';
@@ -23,9 +26,6 @@ part 'maps.dart';
 part 'queue.dart';
 part 'set.dart';
 part 'splay_tree.dart';
-import 'dart:_foreign_helper' show JS;
-import 'dart:_js_helper' show
-    fillLiteralMap, InternalMap, NoInline, NoThrows, patch;
 
 class _HashMap<K, V> implements HashMap<K, V> {
   int _length = 0;