DevTools: introduce CSSStyleSheetHeader.originalContentProvider() method

third_party/WebKit/Source/devtools/front_end/bindings/NetworkProject.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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 290 matching lines @@
 
     /**
      * @param {!WebInspector.Event} event
      */
     _styleSheetAdded: function(event)
     {
         var header = /** @type {!WebInspector.CSSStyleSheetHeader} */ (event.data);
         if (header.isInline && !header.hasSourceURL && header.origin !== "inspector")
             return;
 
-        var uiSourceCode = this._createFile(header, WebInspector.ResourceTreeFrame.fromStyleSheet(header), false);
+        var originalContentProvider = header.originalContentProvider();
+        var uiSourceCode = this._createFile(originalContentProvider, WebInspector.ResourceTreeFrame.fromStyleSheet(header), false);
         if (uiSourceCode) {
             uiSourceCode[WebInspector.NetworkProject._styleSheetSymbol] = header;
-            this._addUISourceCodeWithProvider(uiSourceCode, header);
+            this._addUISourceCodeWithProvider(uiSourceCode, originalContentProvider);
         }
     },
 
     /**
      * @param {!WebInspector.Event} event
      */
     _styleSheetRemoved: function(event)
     {
         var header = /** @type {!WebInspector.CSSStyleSheetHeader} */ (event.data);
         if (header.isInline && !header.hasSourceURL && header.origin !== "inspector")
@@ skipping 114 matching lines @@
 
     _reset: function()
     {
         for (var project of this._workspaceProjects.values())
             project.reset();
         this._workspaceProjects.clear();
     },
 
     __proto__: WebInspector.SDKObject.prototype
 }