DevTools: do not show compiled script while source maps are being loaded.

Source/devtools/front_end/sources/UISourceCodeFrame.js

 /*
  * Copyright (C) 2012 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 62 matching lines @@
         delete this._boundWindowFocused;
         this._uiSourceCode.removeWorkingCopyGetter();
     },
 
     /**
      * @return {boolean}
      */
     canEditSource: function()
     {
         var projectType = this._uiSourceCode.project().type();
-        if (projectType === WebInspector.projectTypes.Debugger || projectType === WebInspector.projectTypes.Formatter)
+        if (projectType === WebInspector.projectTypes.Service || projectType === WebInspector.projectTypes.Debugger || projectType === WebInspector.projectTypes.Formatter)
             return false;
         if (projectType === WebInspector.projectTypes.Network && this._uiSourceCode.contentType() === WebInspector.resourceTypes.Document)
             return false;
         return true;
     },
 
     _windowFocused: function(event)
     {
         this._checkContentUpdated();
     },
@@ skipping 196 matching lines @@
 
     dispose: function()
     {
         this.element.remove();
         this._onResize();
         delete this._uiSourceCodeFrame;
         if (this._onDispose)
             this._onDispose();
     }
 }