DevTools: Speculatively patch DevTools to make CodeSchool extension work.

Source/devtools/front_end/HeapSnapshotView.js

 /*
  * Copyright (C) 2011 Google 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.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 845 matching lines @@
         function didLoadBaseSnaphot(baseSnapshotProxy)
         {
             if (this._diffDataGrid.baseSnapshot !== baseSnapshotProxy)
                 this._diffDataGrid.setBaseDataSource(baseSnapshotProxy);
         }
     },
 
     _onSelectedPerspectiveChanged: function(event)
     {
         this._changePerspective(event.target.selectedIndex);
+        // FIXME: This is needed by CodeSchool extension.
+        this._onSelectedViewChanged(event);
+    },
+
+    _onSelectedViewChanged: function(event)
+    {
     },
 
     _changePerspective: function(selectedIndex)
     {
         if (selectedIndex === this._currentPerspectiveIndex)
             return;
 
         if (this._dataGrid)
             this._dataGrid.removeEventListener(WebInspector.HeapSnapshotSortableDataGrid.Events.ResetFilter, this._onResetClassNameFilter, this);
 
@@ skipping 1291 matching lines @@
         if (color)
             swatchDiv.style.backgroundColor = color;
         else
             swatchDiv.classList.add("heap-snapshot-stats-empty-swatch");
         nameDiv.textContent = name;
         sizeDiv.textContent = WebInspector.UIString("%s KB", Number.withThousandsSeparator(Math.round(value / 1024)));
     },
 
     __proto__: WebInspector.VBox.prototype
 }