Spelling fixes e to i.

samples-dev/swarm/swarm_ui_lib/touch/Scrollbar.dart

 // Copyright (c) 2011, 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 touch;
 
 /**
  * Implementation of a scrollbar for the custom scrolling behavior
  * defined in [:Scroller:].
  */
@@ skipping 113 matching lines @@
       // DOM drive.
       _frame.onClick.listen((Event e) {
         // Always focus on click as one of our children isn't all focused.
         if (!_frame.contains(document.activeElement)) {
           scrollerEl.focus();
         }
       });
       _frame.onMouseOver.listen((Event e) {
         final activeElement = document.activeElement;
         // TODO(jacobr): don't steal focus from a child element or a truly
-        // focusable element. Only support stealing focus ffrom another
+        // focusable element. Only support stealing focus from another
         // element that was given fake focus.
         if (activeElement is BodyElement ||
             (!_frame.contains(activeElement) && activeElement is DivElement)) {
           scrollerEl.focus();
         }
         if (_hovering == false) {
           _hovering = true;
           _cancelTimeout();
           _showScrollbars(true);
           refresh();
         }
       });
       _frame.onMouseOut.listen((e) {
         _hovering = false;
         // Start hiding immediately if we aren't
         // scrolling or already in the process of
-        // hidng the scrollbar
+        // hiding the scrollbar
         if (!_scrollInProgress && _timer == null) {
           _boundHideFn();
         }
       });
     }
   }
 
   void _onStart(/*MouseEvent | Touch*/ e) {
     Element elementOver = e.target;
     if (elementOver == _verticalElement || elementOver == _horizontalElement) {
@@ skipping 180 matching lines @@
     style.setProperty(cssPos, '${pos}px', '');
     if (_cachedSize[cssSize] != size) {
       _cachedSize[cssSize] = size;
       style.setProperty(cssSize, '${size}px', '');
     }
     if (element.parent == null) {
       _frame.nodes.add(element);
     }
   }
 }