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

Source/devtools/front_end/common/StaticContentProvider.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
  * @implements {WebInspector.ContentProvider}
  * @param {!WebInspector.ResourceType} contentType
  * @param {string} content
+ * @param {string=} contentURL
  */
-WebInspector.StaticContentProvider = function(contentType, content)
+WebInspector.StaticContentProvider = function(contentType, content, contentURL)
 {
     this._content = content;
     this._contentType = contentType;
+    this._contentURL = contentURL || "";
 }
 
 /**
  * @param {string} content
  * @param {string} query
  * @param {boolean} caseSensitive
  * @param {boolean} isRegex
  * @param {function(!Array.<!WebInspector.ContentProvider.SearchMatch>)} callback
  */
 WebInspector.StaticContentProvider.searchInContent = function(content, query, caseSensitive, isRegex, callback)
 {
     function performSearch()
     {
         callback(WebInspector.ContentProvider.performSearchInContent(content, query, caseSensitive, isRegex));
     }
 
     // searchInContent should call back later.
     setTimeout(performSearch.bind(null), 0);
 }
 
 WebInspector.StaticContentProvider.prototype = {
     /**
      * @return {string}
      */
     contentURL: function()
     {
-        return "";
+        return this._contentURL;
     },
 
     /**
      * @return {!WebInspector.ResourceType}
      */
     contentType: function()
     {
         return this._contentType;
     },
 
     /**
      * @param {function(?string)} callback
      */
     requestContent: function(callback)
     {
         callback(this._content);
     },
 
     /**
      * @param {string} query
      * @param {boolean} caseSensitive
      * @param {boolean} isRegex
      * @param {function(!Array.<!WebInspector.ContentProvider.SearchMatch>)} callback
      */
     searchInContent: function(query, caseSensitive, isRegex, callback)
     {
         WebInspector.StaticContentProvider.searchInContent(this._content, query, caseSensitive, isRegex, callback);
     }
 }