DevTools: Styling for blackbox regex UI dialog.

Source/devtools/front_end/settings/FrameworkBlackboxDialog.js

 /*
  * Copyright 2014 The Chromium Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 /**
  * @constructor
  * @extends {WebInspector.DialogDelegate}
  */
@@ skipping 145 matching lines @@
             }
             if (patterns[i].pattern === oldPattern) {
                 patterns[i] = { pattern: newPattern, disabled: disabled };
                 break;
             }
         }
         WebInspector.settings.skipStackFramesPattern.setAsArray(patterns);
 
         if (oldPattern && oldPattern === newPattern) {
             this._entries.put(newPattern, disabled ? this._disabledLabel : this._blackboxLabel)
+            this._patternsList.itemForId(oldPattern).classList.toggle("disabled", disabled);
             this._patternsList.refreshItem(newPattern);
             return;
         }
 
         if (oldPattern) {
             this._patternsList.removeItem(oldPattern);
             this._entries.remove(oldPattern);
         }
         this._addPattern(newPattern, disabled);
     },
@@ skipping 20 matching lines @@
 
     /**
      * @param {string} pattern
      * @param {boolean=} disabled
      */
     _addPattern: function(pattern, disabled)
     {
         if (!pattern || this._entries.contains(pattern))
             return;
         this._entries.put(pattern, disabled ? this._disabledLabel : this._blackboxLabel);
-        this._patternsList.addItem(pattern, null);
+        var listItem = this._patternsList.addItem(pattern, null);
+        listItem.classList.toggle("disabled", disabled);
         this._resize();
     },
 
     focus: function()
     {
         WebInspector.setCurrentFocusElement(this.element);
     },
 
     _onDoneClick: function()
     {
         WebInspector.Dialog.hide();
     },
 
     onEnter: function(event)
     {
         var focusElement = WebInspector.currentFocusElement();
         var nodeName = focusElement && focusElement.nodeName.toLowerCase();
         if (nodeName === "input" || nodeName === "select") {
             this.focus();
             event.consume(true);
             return;
         }
     },
 
     __proto__: WebInspector.DialogDelegate.prototype
 }