Chrome::client() should return a ChromeClient reference.

Source/core/html/shadow/PasswordGeneratorButtonElement.cpp

 /*
  * 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 153 matching lines @@
 {
     RefPtr<HTMLInputElement> input = hostInput();
     if (!input || input->isDisabledOrReadOnly() || !event->isMouseEvent()) {
         if (!event->defaultHandled())
             HTMLDivElement::defaultEventHandler(event);
         return;
     }
 
     RefPtr<PasswordGeneratorButtonElement> protector(this);
     if (event->type() == eventNames().clickEvent) {
-        if (ChromeClient* chromeClient = document()->page() ? document()->page()->chrome().client() : 0)
-            chromeClient->openPasswordGenerator(input.get());
+        if (Page* page = document()->page())
+            page->chrome().client().openPasswordGenerator(input.get());
         event->setDefaultHandled();
     }
 
     if (event->type() == eventNames().mouseoverEvent) {
         m_isInHoverState = true;
         updateImage();
     }
 
     if (event->type() == eventNames().mouseoutEvent) {
         m_isInHoverState = false;
@@ skipping 16 matching lines @@
 bool PasswordGeneratorButtonElement::willRespondToMouseClickEvents()
 {
     const HTMLInputElement* input = hostInput();
     if (!input->isDisabledOrReadOnly())
         return true;
 
     return HTMLDivElement::willRespondToMouseClickEvents();
 }
 
 } // namespace WebCore