Use dartfmt on Observatory code

runtime/observatory/lib/src/allocation_profile/allocation_profile.dart

 // Copyright (c) 2015, 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.
 
 part of allocation_profiler;
 
 class AllocationProfile implements M.AllocationProfile {
   static const _lastServiceGC = 'dateLastServiceGC';
   final DateTime lastServiceGC;
   static const _lastAccumulatorReset = 'dateLastAccumulatorReset';
   final DateTime lastAccumulatorReset;
   final S.HeapSpace newSpace;
   final S.HeapSpace oldSpace;
   final Iterable<ClassHeapStats> members;
 
   AllocationProfile(S.ServiceMap map)
-    : lastAccumulatorReset = _intString2DateTime(map[_lastAccumulatorReset]),
-      lastServiceGC = _intString2DateTime(map[_lastServiceGC]),
-      oldSpace = new S.HeapSpace()..update(map['heaps']['old']),
-      newSpace = new S.HeapSpace()..update(map['heaps']['new']),
-      members = map['members'].map(_convertMember).toList();
+      : lastAccumulatorReset = _intString2DateTime(map[_lastAccumulatorReset]),
+        lastServiceGC = _intString2DateTime(map[_lastServiceGC]),
+        oldSpace = new S.HeapSpace()..update(map['heaps']['old']),
+        newSpace = new S.HeapSpace()..update(map['heaps']['new']),
+        members = map['members'].map(_convertMember).toList();
 
   static DateTime _intString2DateTime(String milliseconds) {
     if ((milliseconds == null) || milliseconds == '') {
       return null;
     }
     return new DateTime.fromMillisecondsSinceEpoch(int.parse(milliseconds));
   }
 
   static ClassHeapStats _convertMember(S.ServiceMap map) {
     assert(map['type'] == 'ClassHeapStats');
     return new ClassHeapStats(map);
   }
 }
 
 class ClassHeapStats implements M.ClassHeapStats {
   final S.Class clazz;
   final S.Allocations newSpace;
   final S.Allocations oldSpace;
   final int promotedInstances;
   final int promotedBytes;
 
   ClassHeapStats(S.ServiceMap map)
-    : clazz = map['class'],
-      oldSpace = new S.Allocations()..update(map['old']),
-      newSpace = new S.Allocations()..update(map['new']),
-      promotedInstances = map['promotedInstances'],
-      promotedBytes = map['promotedBytes'];
+      : clazz = map['class'],
+        oldSpace = new S.Allocations()..update(map['old']),
+        newSpace = new S.Allocations()..update(map['new']),
+        promotedInstances = map['promotedInstances'],
+        promotedBytes = map['promotedBytes'];
 }