Remove window.status plumbing, it's unused and the spec says it's a dummy

third_party/WebKit/Source/core/page/ChromeClient.h

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple, Inc. All rights
  * reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
  * Copyright (C) 2012 Samsung Electronics. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
@@ skipping 165 matching lines @@
                                     bool is_reload);
 
   virtual void CloseWindowSoon() = 0;
 
   bool OpenJavaScriptAlert(LocalFrame*, const String&);
   bool OpenJavaScriptConfirm(LocalFrame*, const String&);
   bool OpenJavaScriptPrompt(LocalFrame*,
                             const String& message,
                             const String& default_value,
                             String& result);
-  virtual void SetStatusbarText(const String&) = 0;
   virtual bool TabsToLinks() = 0;
 
   virtual void* WebView() const = 0;
 
   // Methods used by PlatformChromeClient.
   virtual WebScreenInfo GetScreenInfo() const = 0;
   virtual void SetCursor(const Cursor&, LocalFrame* local_root) = 0;
   // End methods used by PlatformChromeClient.
 
   virtual void SetCursorOverridden(bool) = 0;
@@ skipping 202 matching lines @@
   WeakMember<Node> last_mouse_over_node_;
   LayoutPoint last_tool_tip_point_;
   String last_tool_tip_text_;
 
   FRIEND_TEST_ALL_PREFIXES(ChromeClientTest, SetToolTipFlood);
 };
 
 }  // namespace blink
 
 #endif  // ChromeClient_h