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

Source/devtools/front_end/sdk/DOMModel.js

Index: Source/devtools/front_end/sdk/DOMModel.js
diff --git a/Source/devtools/front_end/sdk/DOMModel.js b/Source/devtools/front_end/sdk/DOMModel.js
index 66253b66f01e67fc67155c7d7a47013946ff1eb1..a54e229e04e485420a379bc99cf28ef4567677f9 100644
--- a/Source/devtools/front_end/sdk/DOMModel.js
+++ b/Source/devtools/front_end/sdk/DOMModel.js
@@ -456,12 +456,17 @@ WebInspector.DOMNode.prototype = {
         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);
     },
@@ -709,6 +714,16 @@ WebInspector.DOMNode.prototype = {
      * @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));