DevTools: [SSP] live-update property value when it's selected via mouse.

Source/devtools/front_end/ui/TextPrompt.js

 /*
  * Copyright (C) 2008 Apple Inc.  All rights reserved.
  * 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:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 551 matching lines @@
     {
         this._acceptSuggestionInternal();
     },
 
     /**
      * @param {boolean=} prefixAccepted
      * @return {boolean}
      */
     _acceptSuggestionInternal: function(prefixAccepted)
     {
-        if (this._isAcceptingSuggestion)
-            return false;
-
         if (!this.autoCompleteElement || !this.autoCompleteElement.parentNode)
             return false;
 
         var text = this.autoCompleteElement.textContent;
         var textNode = document.createTextNode(text);
         this.autoCompleteElement.parentNode.replaceChild(textNode, this.autoCompleteElement);
         delete this.autoCompleteElement;
 
         var finalSelectionRange = document.createRange();
         finalSelectionRange.setStart(textNode, text.length);
@@ skipping 314 matching lines @@
 
             return;
         }
 
         WebInspector.TextPrompt.prototype.onKeyDown.apply(this, arguments);
     },
 
     __proto__: WebInspector.TextPrompt.prototype
 }