DevTools: Fixes regression in cookies tab in Network panel having no output

third_party/WebKit/Source/devtools/front_end/cookie_table/CookiesTable.js

 /*
  * Copyright (C) 2009 Apple Inc.  All rights reserved.
  * Copyright (C) 2009 Joseph Pecoraro
  * Copyright (C) 2010 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
@@ skipping 147 matching lines @@
   willHide() {
     this._lastEditedColumnId = null;
   }
 
   /**
    * @param {{current: ?SDK.Cookie, neighbor: ?SDK.Cookie}} selectionCookies
    * @param {!Array<!SDK.Cookie>} cookies
    * @return {?SDK.Cookie}
    */
   _findSelectedCookie(selectionCookies, cookies) {
+    if (!cookies)

[eostroukhov, 2017/03/20 17:34:59]

Please fix JSDoc comment above to indicate that cookies might be null (replace
first exclamation point with the question mark)

+      return null;
+
     var current = selectionCookies.current;
     var foundCurrent = cookies.find(cookie => this._isSameCookie(cookie, current));
     if (foundCurrent)
       return foundCurrent;
 
     var neighbor = selectionCookies.neighbor;
     var foundNeighbor = cookies.find(cookie => this._isSameCookie(cookie, neighbor));
     if (foundNeighbor)
       return foundNeighbor;
 
@@ skipping 298 matching lines @@
   }
 
   _refresh() {
     if (this._refreshCallback)
       this._refreshCallback();
   }
 };
 
 /** @const */
 CookieTable.CookiesTable._expiresSessionValue = Common.UIString('Session');