Revert "Fix observatory tests broken by running dartfmt."

runtime/observatory/tests/observatory_ui/mocks/objects/sample_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
 
 part of mocks;
 
 typedef M.FunctionCallTree SampleProfileMockLoadFunctionTreeCallback(
     M.ProfileTreeDirection direction);
 typedef M.CodeCallTree SampleProfileMockLoadCodeTreeCallback(
     M.ProfileTreeDirection direction);
 
 class SampleProfileMock implements M.SampleProfile {
   final SampleProfileMockLoadFunctionTreeCallback _loadFunctionTree;
   final SampleProfileMockLoadCodeTreeCallback _loadCodeTree;
 
   final int sampleCount;
   final int stackDepth;
   final double sampleRate;
   final double timeSpan;
   final Iterable<M.ProfileCode> codes;
   final Iterable<M.ProfileFunction> functions;
 
   M.FunctionCallTree loadFunctionTree(M.ProfileTreeDirection direction) {
     if (_loadFunctionTree != null) {
       return _loadFunctionTree(direction);
     }
     return null;
   }
-
   M.CodeCallTree loadCodeTree(M.ProfileTreeDirection direction) {
     if (_loadCodeTree != null) {
       return _loadCodeTree(direction);
     }
     return null;
   }
 
-  SampleProfileMock(
-      {this.sampleCount: 0,
-      this.stackDepth: 0,
-      this.sampleRate: 1.0,
-      this.timeSpan: 1.0,
-      this.codes: const [],
-      this.functions: const [],
+  SampleProfileMock({this.sampleCount: 0, this.stackDepth: 0,
+      this.sampleRate: 1.0, this.timeSpan: 1.0,
+      this.codes: const [], this.functions: const [],
       SampleProfileMockLoadFunctionTreeCallback loadFunctionTree,
       SampleProfileMockLoadCodeTreeCallback loadCodeTree})
-      : _loadFunctionTree = loadFunctionTree,
-        _loadCodeTree = loadCodeTree;
+    : _loadFunctionTree = loadFunctionTree,
+      _loadCodeTree = loadCodeTree;
 }