DevTools: bring back exception handling in URL decoding

Source/devtools/front_end/bindings/NetworkWorkspaceBinding.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 120 matching lines @@
      * @param {string} url
      * @param {!WebInspector.ContentProvider} contentProvider
      * @param {boolean=} isContentScript
      * @return {!WebInspector.UISourceCode}
      */
     addFileForURL: function(url, contentProvider, isContentScript)
     {
         var splitURL = WebInspector.ParsedURL.splitURLIntoPathComponents(url);
         var projectName = splitURL[0];
         var parentPath = splitURL.slice(1, -1).join("/");
-        try {
-            parentPath = parentPath;
-        } catch (e) { }
         var name = splitURL.peekLast() || "";
-        try {
-            name = name;
-        } catch (e) { }
         var projectDelegate = this._projectDelegate(projectName, isContentScript || false);
         var path = projectDelegate.addFile(parentPath, name, url, contentProvider);
         var uiSourceCode = /** @type {!WebInspector.UISourceCode} */ (this._workspace.uiSourceCode(projectDelegate.id(), path));
         console.assert(uiSourceCode);
         return uiSourceCode;
     },
 
     /**
      * @param {string} url
      */
     removeFileForURL: function(url)
     {
         var splitURL = WebInspector.ParsedURL.splitURLIntoPathComponents(url);
         var projectName = splitURL[0];
         var projectDelegate = this._projectDelegates[projectName];
         projectDelegate.removeFile(url);
     },
 
     reset: function()
     {
         for (var projectId in this._projectDelegates)
             this._projectDelegates[projectId].reset();
         this._projectDelegates = {};
     },
 
     __proto__: WebInspector.Object.prototype
 }