DevTools: Replace Apple styled spinner icon with Chromium one.

Source/devtools/front_end/heapProfiler.css

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  * Copyright (C) 2010 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 15 matching lines @@
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 .heap-snapshot-sidebar-tree-item .icon {
     content: url(Images/profileIcon.png);
 }
 
-.heap-snapshot-sidebar-tree-item.wait .icon {
-    content: url(Images/spinner.gif);
-}
-
-.heap-snapshot-sidebar-tree-item.wait.selected .icon {
-    content: url(Images/spinnerSelected.gif);
-}
-
 .heap-snapshot-sidebar-tree-item.small .icon {
     content: url(Images/profileSmallIcon.png);
 }
 
 .heap-snapshot-view {
     display: none;
     overflow: hidden;
     position: absolute;
     top: 0;
     left: 0;
@@ skipping 189 matching lines @@
 .heap-snapshot-stats-name,
 .heap-snapshot-stats-size {
     display: inline-block;
     margin-left: 6px;
 }
 
 .heap-snapshot-stats-size {
     float: right;
     text-align: right;
 }