Use dartfmt on Observatory code

runtime/observatory/lib/src/elements/class_allocation_profile.dart

 // Copyright (c) 2016, 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.
 
 import 'dart:html';
 import 'dart:async';
 import 'package:observatory/models.dart' as M;
 import 'package:observatory/src/elements/cpu_profile/virtual_tree.dart';
 import 'package:observatory/src/elements/helpers/rendering_scheduler.dart';
 import 'package:observatory/src/elements/helpers/tag.dart';
 import 'package:observatory/src/elements/sample_buffer_control.dart';
 import 'package:observatory/src/elements/stack_trace_tree_config.dart';
 
 class ClassAllocationProfileElement extends HtmlElement implements Renderable {
   static const tag = const Tag<ClassAllocationProfileElement>(
-    'class-allocation-profile',
-    dependencies: const [
-      SampleBufferControlElement.tag,
-      StackTraceTreeConfigElement.tag,
-      CpuProfileVirtualTreeElement.tag,
-    ]);
+      'class-allocation-profile',
+      dependencies: const [
+        SampleBufferControlElement.tag,
+        StackTraceTreeConfigElement.tag,
+        CpuProfileVirtualTreeElement.tag,
+      ]);
 
   RenderingScheduler<ClassAllocationProfileElement> _r;
 
   Stream<RenderedEvent<ClassAllocationProfileElement>> get onRendered =>
-    _r.onRendered;
+      _r.onRendered;
 
   M.IsolateRef _isolate;
   M.Class _cls;
   M.ClassSampleProfileRepository _profiles;
   Stream<M.SampleProfileLoadingProgressEvent> _progressStream;
   M.SampleProfileLoadingProgress _progress;
   M.SampleProfileTag _tag = M.SampleProfileTag.none;
   ProfileTreeMode _mode = ProfileTreeMode.function;
   M.ProfileTreeDirection _direction = M.ProfileTreeDirection.exclusive;
 
-
-
   M.IsolateRef get isolate => _isolate;
   M.Class get cls => _cls;
 
   factory ClassAllocationProfileElement(M.IsolateRef isolate, M.Class cls,
-      M.ClassSampleProfileRepository profiles, {RenderingQueue queue}) {
+      M.ClassSampleProfileRepository profiles,
+      {RenderingQueue queue}) {
     assert(isolate != null);
     assert(cls != null);
     assert(profiles != null);
     ClassAllocationProfileElement e = document.createElement(tag.name);
     e._r = new RenderingScheduler(e, queue: queue);
     e._isolate = isolate;
     e._cls = cls;
     e._profiles = profiles;
     return e;
   }
@@ skipping 24 matching lines @@
           selectedTag: _tag, queue: _r.queue)
         ..onTagChange.listen((e) {
           _tag = e.element.selectedTag;
           _request();
         })
     ];
     if (_progress.status == M.SampleProfileLoadingStatus.loaded) {
       CpuProfileVirtualTreeElement tree;
       content.addAll([
         new BRElement(),
-        new StackTraceTreeConfigElement(mode: _mode, direction: _direction,
-          showFilter: false, queue: _r.queue)
-            ..onModeChange.listen((e) {
-              _mode = tree.mode = e.element.mode;
-            })
-            ..onDirectionChange.listen((e) {
-              _direction = tree.direction = e.element.direction;
-            }),
+        new StackTraceTreeConfigElement(
+            mode: _mode,
+            direction: _direction,
+            showFilter: false,
+            queue: _r.queue)
+          ..onModeChange.listen((e) {
+            _mode = tree.mode = e.element.mode;
+          })
+          ..onDirectionChange.listen((e) {
+            _direction = tree.direction = e.element.direction;
+          }),
         new BRElement(),
         tree = new CpuProfileVirtualTreeElement(_isolate, _progress.profile,
             queue: _r.queue)
       ]);
     }
     children = content;
   }
 
   Future _request() async {
     _progress = null;
     _progressStream = _profiles.get(_isolate, _cls, _tag);
     _r.dirty();
     _progress = (await _progressStream.first).progress;
     _r.dirty();
     if (M.isSampleProcessRunning(_progress.status)) {
       _progress = (await _progressStream.last).progress;
       _r.dirty();
     }
   }
 }