Improve number formatting in allocation view

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 46 matching lines @@
 
 .heap-snapshot-view .data-grid tr:empty {
     height: 16px;
     visibility: hidden;
 }
 
 .heap-snapshot-view .data-grid tr.selected span {
     color: inherit;
 }
 
-.heap-snapshot-view .data-grid td.count-column {
+.heap-snapshot-view .data-grid td.numeric-column {
     text-align: right;
 }
 
-.heap-snapshot-view .data-grid td.addedCount-column {
-    text-align: right;
-}
-
-.heap-snapshot-view .data-grid td.removedCount-column {
-    text-align: right;
-}
-
-.heap-snapshot-view .data-grid td.countDelta-column {
-    text-align: right;
-}
-
-.heap-snapshot-view .data-grid td.addedSize-column {
-    text-align: right;
-}
-
-.heap-snapshot-view .data-grid td.removedSize-column {
-    text-align: right;
-}
-
-.heap-snapshot-view .data-grid td.sizeDelta-column {
-    text-align: right;
-}
-
-.heap-snapshot-view .data-grid td.shallowSize-column {
-    text-align: right;
-}
-
-.heap-snapshot-view .data-grid td.retainedSize-column {
-    text-align: right;
-}
-
-.heap-snapshot-view .data-grid td.distanceToWindow-column {
-    text-align: right;
-}
-
 .heap-snapshot-view .data-grid div.heap-snapshot-multiple-values {
     float: right;
 }
 
 .heap-snapshot-view .data-grid span.percent-column {
     color: #999;
     width: 32px;
     display: inline-block;
 }
 
@@ skipping 121 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;
 }