[DevTools] Scope common protocol infrastructure under Protocol namespace in a separate module.

third_party/WebKit/Source/devtools/front_end/resources/ApplicationCacheItemsView.js

 /*
  * 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 236 matching lines @@
         if (!this._dataGrid || !this._dataGrid.selectedNode)
             return;
 
         // FIXME: Delete Button semantics are not yet defined. (Delete a single, or all?)
         this._deleteCallback(this._dataGrid.selectedNode);
     },
 
     _deleteCallback: function(node)
     {
         // FIXME: Should we delete a single (selected) resource or all resources?
-        // InspectorBackend.deleteCachedResource(...)
         // this._update();
     },
 
     __proto__: WebInspector.SimpleView.prototype
 };