Run dartfmt on all files under runtime.

runtime/lib/timeline.dart

Index: runtime/lib/timeline.dart
diff --git a/runtime/lib/timeline.dart b/runtime/lib/timeline.dart
index 55a40e84d0a86a3a674d018bc636bec9719d2bd0..ae66b6636c36b5e930eeca5898625f4a241614b0 100644
--- a/runtime/lib/timeline.dart
+++ b/runtime/lib/timeline.dart
@@ -2,33 +2,29 @@
 // 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 bool _isDartStreamEnabled() native "Timeline_isDartStreamEnabled";
+@patch
+bool _isDartStreamEnabled() native "Timeline_isDartStreamEnabled";
 
-@patch int _getTraceClock() native "Timeline_getTraceClock";
+@patch
+int _getTraceClock() native "Timeline_getTraceClock";
 
-@patch int _getThreadCpuClock() native "Timeline_getThreadCpuClock";
+@patch
+int _getThreadCpuClock() native "Timeline_getThreadCpuClock";
 
-@patch int _getNextAsyncId() native "Timeline_getNextAsyncId";
+@patch
+int _getNextAsyncId() native "Timeline_getNextAsyncId";
 
-@patch int _getIsolateNum() native "Timeline_getIsolateNum";
+@patch
+int _getIsolateNum() native "Timeline_getIsolateNum";
 
-@patch void _reportTaskEvent(
-     int start,
-     int taskId,
-     String phase,
-     String category,
-     String name,
-     String argumentsAsJson) native "Timeline_reportTaskEvent";
+@patch
+void _reportTaskEvent(int start, int taskId, String phase, String category,
+    String name, String argumentsAsJson) native "Timeline_reportTaskEvent";
 
-@patch void _reportCompleteEvent(
-     int start,
-     int startCpu,
-     String category,
-     String name,
-     String argumentsAsJson) native "Timeline_reportCompleteEvent";
+@patch
+void _reportCompleteEvent(int start, int startCpu, String category, String name,
+    String argumentsAsJson) native "Timeline_reportCompleteEvent";
 
-@patch void _reportInstantEvent(
-     int start,
-     String category,
-     String name,
-     String argumentsAsJson) native "Timeline_reportInstantEvent";
+@patch
+void _reportInstantEvent(int start, String category, String name,
+    String argumentsAsJson) native "Timeline_reportInstantEvent";