DevTools: [Elements] Implement shortcut-based node cut-copy-pasting

Source/devtools/front_end/sdk/DOMModel.js

 /*
  * Copyright (C) 2009, 2010 Google Inc. All rights reserved.
  * Copyright (C) 2009 Joseph Pecoraro
  *
  * 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 438 matching lines @@
     },
 
     /**
      * @param {function(?Protocol.Error, !DOMAgent.NodeId=)=} callback
      */
     removeNode: function(callback)
     {
         this._agent.removeNode(this.id, this._domModel._markRevision(this, callback));
     },
 
-    copyNode: function()
+    /**
+     * @param {function(?string)=} callback
+     */
+    copyNode: function(callback)
     {
         function copy(error, text)
         {
             if (!error)
                 InspectorFrontendHost.copyText(text);
+            if (callback)
+                callback(error ? null : text);
         }
         this._agent.getOuterHTML(this.id, copy);
     },
 
     /**
      * @param {string} objectGroupId
      * @param {function(?Array.<!WebInspector.DOMModel.EventListener>)} callback
      */
     eventListeners: function(objectGroupId, callback)
     {
@@ skipping 227 matching lines @@
             this._attributes.remove(attr);
             delete this._attributesMap[name];
         }
     },
 
     /**
      * @param {!WebInspector.DOMNode} targetNode
      * @param {?WebInspector.DOMNode} anchorNode
      * @param {function(?Protocol.Error, !DOMAgent.NodeId=)=} callback
      */
+    copyTo: function(targetNode, anchorNode, callback)
+    {
+        this._agent.copyTo(this.id, targetNode.id, anchorNode ? anchorNode.id : undefined, this._domModel._markRevision(this, callback));
+    },
+
+    /**
+     * @param {!WebInspector.DOMNode} targetNode
+     * @param {?WebInspector.DOMNode} anchorNode
+     * @param {function(?Protocol.Error, !DOMAgent.NodeId=)=} callback
+     */
     moveTo: function(targetNode, anchorNode, callback)
     {
         this._agent.moveTo(this.id, targetNode.id, anchorNode ? anchorNode.id : undefined, this._domModel._markRevision(this, callback));
     },
 
     /**
      * @return {boolean}
      */
     isXMLNode: function()
     {
@@ skipping 1205 matching lines @@
      * @param {boolean} inspectUAShadowDOM
      * @param {!DOMAgent.HighlightConfig} config
      * @param {function(?Protocol.Error)=} callback
      */
     setInspectModeEnabled: function(enabled, inspectUAShadowDOM, config, callback)
     {
         WebInspector.overridesSupport.setTouchEmulationSuspended(enabled);
         this._agent.setInspectModeEnabled(enabled, inspectUAShadowDOM, config, callback);
     }
 }