Fix inconsistency about how to spell "statusBar" which was causing warnings.

sky/sdk/lib/framework/components2/scaffold.dart

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 import '../fn2.dart';
 import '../rendering/box.dart';
 import '../rendering/object.dart';
 import '../theme2/view_configuration.dart';
 
 enum ScaffoldSlots {
   toolbar,
   body,
   statusBar,
   drawer,
   floatingActionButton
 }
 
 class RenderScaffold extends RenderBox {
 
   RenderScaffold({
     RenderBox toolbar,
     RenderBox body,
-    RenderBox statusbar,
+    RenderBox statusBar,
     RenderBox drawer,
     RenderBox floatingActionButton
   }) {
     this[ScaffoldSlots.toolbar] = toolbar;
     this[ScaffoldSlots.body] = body;
-    this[ScaffoldSlots.statusBar] = statusbar;
+    this[ScaffoldSlots.statusBar] = statusBar;
     this[ScaffoldSlots.drawer] = drawer;
     this[ScaffoldSlots.floatingActionButton] = floatingActionButton;
   }
 
   Map<ScaffoldSlots, RenderBox> _slots = new Map<ScaffoldSlots, RenderBox>();
   RenderBox operator[] (ScaffoldSlots slot) => _slots[slot];
   void operator[]= (ScaffoldSlots slot, RenderBox value) {
     RenderBox old = _slots[slot];
     if (old == value)
       return;
@@ skipping 50 matching lines @@
     if (_slots[ScaffoldSlots.toolbar] != null) {
       RenderBox toolbar = _slots[ScaffoldSlots.toolbar];
       double toolbarHeight = kToolBarHeight + kNotificationAreaHeight;
       toolbar.layout(new BoxConstraints.tight(new Size(size.width, toolbarHeight)));
       assert(toolbar.parentData is BoxParentData);
       toolbar.parentData.position = Point.origin;
       bodyPosition += toolbarHeight;
       bodyHeight -= toolbarHeight;
     }
     if (_slots[ScaffoldSlots.statusBar] != null) {
-      RenderBox statusbar = _slots[ScaffoldSlots.statusBar];
-      statusbar.layout(new BoxConstraints.tight(new Size(size.width, kStatusbarHeight)));
-      assert(statusbar.parentData is BoxParentData);
-      statusbar.parentData.position = new Point(0.0, size.height - kStatusbarHeight);
-      bodyHeight -= kStatusbarHeight;
+      RenderBox statusBar = _slots[ScaffoldSlots.statusBar];
+      statusBar.layout(new BoxConstraints.tight(new Size(size.width, kStatusBarHeight)));
+      assert(statusBar.parentData is BoxParentData);
+      statusBar.parentData.position = new Point(0.0, size.height - kStatusBarHeight);
+      bodyHeight -= kStatusBarHeight;
     }
     if (_slots[ScaffoldSlots.body] != null) {
       RenderBox body = _slots[ScaffoldSlots.body];
       body.layout(new BoxConstraints.tight(new Size(size.width, bodyHeight)));
       assert(body.parentData is BoxParentData);
       body.parentData.position = new Point(0.0, bodyPosition);
     }
     if (_slots[ScaffoldSlots.drawer] != null) {
       RenderBox drawer = _slots[ScaffoldSlots.drawer];
       drawer.layout(new BoxConstraints(minWidth: 0.0, maxWidth: size.width, minHeight: size.height, maxHeight: size.height));
@@ skipping 40 matching lines @@
 class Scaffold extends RenderObjectWrapper {
 
   // static final Style _style = new Style('''
   //   ${typography.typeface};
   //   ${typography.black.body1};''');
 
   Scaffold({
     Object key,
     UINode toolbar,
     UINode body,
-    UINode statusbar,
+    UINode statusBar,
     UINode drawer,
     UINode floatingActionButton
   }) : _toolbar = toolbar,
        _body = body,
-       _statusbar = statusbar,
+       _statusBar = statusBar,
        _drawer = drawer,
        _floatingActionButton = floatingActionButton,
        super(key: key);
 
   UINode _toolbar;
   UINode _body;
-  UINode _statusbar;
+  UINode _statusBar;
   UINode _drawer;
   UINode _floatingActionButton;
 
   RenderScaffold get root => super.root as RenderScaffold;
   RenderScaffold createNode() => new RenderScaffold();
 
   void insert(RenderObjectWrapper child, ScaffoldSlots slot) {
     root[slot] = child != null ? child.root : null;
   }
 
   void removeChild(UINode node) {
     assert(node != null);
     root.remove(node.root);
     super.removeChild(node);
   }
 
   void remove() {
     if (_toolbar != null)
       removeChild(_toolbar);
     if (_body != null)
       removeChild(_body);
-    if (_statusbar != null)
-      removeChild(_statusbar);
+    if (_statusBar != null)
+      removeChild(_statusBar);
     if (_drawer != null)
       removeChild(_drawer);
     if (_floatingActionButton != null)
       removeChild(_floatingActionButton);
     super.remove();
   }
 
   void syncRenderObject(UINode old) {
     super.syncRenderObject(old);
     _toolbar = syncChild(_toolbar, old is Scaffold ? old._toolbar : null, ScaffoldSlots.toolbar);
     _body = syncChild(_body, old is Scaffold ? old._body : null, ScaffoldSlots.body);
-    _statusbar = syncChild(_statusbar, old is Scaffold ? old._statusbar : null, ScaffoldSlots.statusBar);
+    _statusBar = syncChild(_statusBar, old is Scaffold ? old._statusBar : null, ScaffoldSlots.statusBar);
     _drawer = syncChild(_drawer, old is Scaffold ? old._drawer : null, ScaffoldSlots.drawer);
     _floatingActionButton = syncChild(_floatingActionButton, old is Scaffold ? old._floatingActionButton : null, ScaffoldSlots.floatingActionButton);
   }
 
 }