DevTools: introduce CSSStyleSheetHeader.originalContentProvider() method

third_party/WebKit/Source/devtools/front_end/bindings/CompilerScriptMapping.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 178 matching lines @@
     },
 
     /**
      * @param {!WebInspector.Script} script
      */
     _processScript: function(script)
     {
         if (WebInspector.blackboxManager.isBlackboxedURL(script.sourceURL, script.isContentScript()))
             return;
         // Create stub UISourceCode for the time source mapping is being loaded.
-        var stubUISourceCode = this._stubProject.addContentProvider(script.sourceURL, new WebInspector.StaticContentProvider(WebInspector.resourceTypes.Script, "\n\n\n\n\n// Please wait a bit.\n// Compiled script is not shown while source map is being loaded!", script.sourceURL));
+        var stubUISourceCode = this._stubProject.addContentProvider(script.sourceURL, new WebInspector.StaticContentProvider(script.sourceURL, WebInspector.resourceTypes.Script, Promise.resolve("\n\n\n\n\n// Please wait a bit.\n// Compiled script is not shown while source map is being loaded!")));
         this._stubUISourceCodes.set(script.scriptId, stubUISourceCode);
 
         this._debuggerWorkspaceBinding.pushSourceMapping(script, this);
         this._loadSourceMapForScript(script).then(this._sourceMapLoaded.bind(this, script, stubUISourceCode.url()));
     },
 
     /**
      * @param {!WebInspector.Script} script
      * @param {string} uiSourceCodePath
      * @param {?WebInspector.TextSourceMap} sourceMap
@@ skipping 172 matching lines @@
         this._sourceMapForScriptId.clear()
         this._scriptForSourceMap.clear();
         this._sourceMapForURL.clear();
     },
 
     dispose: function()
     {
         this._workspace.removeEventListener(WebInspector.Workspace.Events.UISourceCodeAdded, this._uiSourceCodeAddedToWorkspace, this);
     }
 }