DevTools: Provide #sourceURL for CSS stylesheets in the debug_devtools=1 mode

Source/devtools/front_end/ui/View.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.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 32 matching lines @@
     this.element.__view = this;
     this._visible = true;
     this._isRoot = false;
     this._isShowing = false;
     this._children = [];
     this._hideOnDetach = false;
     this._cssFiles = [];
     this._notificationDepth = 0;
 }
 
-WebInspector.View._buildSourceURL = function(cssFile)
-{
-    return "\n/*# sourceURL=" + WebInspector.ParsedURL.completeURL(window.location.href, cssFile) + " */";
-}
-
 /**
  * @param {string} cssFile
  * @return {!Element}
  */
 WebInspector.View.createStyleElement = function(cssFile)
 {
     var content = Runtime.cachedResources[cssFile] || "";
     if (!content)
         console.error(cssFile + " not preloaded. Check module.json");
     var styleElement = createElement("style");
@@ skipping 598 matching lines @@
 {
     WebInspector.View.__assert(!child.__viewCounter && !child.__view, "Attempt to remove element containing view via regular DOM operation");
     return WebInspector.View._originalRemoveChild.call(this, child);
 }
 
 Element.prototype.removeChildren = function()
 {
     WebInspector.View.__assert(!this.__viewCounter, "Attempt to remove element containing view via regular DOM operation");
     WebInspector.View._originalRemoveChildren.call(this);
 }