Run dartfmt on all files under runtime.

runtime/lib/profiler.dart

Index: runtime/lib/profiler.dart
diff --git a/runtime/lib/profiler.dart b/runtime/lib/profiler.dart
index acf6f583fbf0740b4dca2f914cb517fb8a523c62..d29b54d75e4d0a6a8ebf81cd76e4d1a3141266c6 100644
--- a/runtime/lib/profiler.dart
+++ b/runtime/lib/profiler.dart
@@ -2,11 +2,14 @@
 // 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.
 
-@patch class UserTag {
-  @patch factory UserTag(String label) {
+@patch
+class UserTag {
+  @patch
+  factory UserTag(String label) {
     return new _UserTag(label);
   }
-  @patch static UserTag get defaultTag => _getDefaultTag();
+  @patch
+  static UserTag get defaultTag => _getDefaultTag();
 }
 
 class _UserTag implements UserTag {
@@ -15,7 +18,8 @@ class _UserTag implements UserTag {
   UserTag makeCurrent() native "UserTag_makeCurrent";
 }
 
-@patch UserTag getCurrentTag() => _getCurrentTag();
+@patch
+UserTag getCurrentTag() => _getCurrentTag();
 UserTag _getCurrentTag() native "Profiler_getCurrentTag";
 
 UserTag _getDefaultTag() native "UserTag_defaultTag";