Page::chrome() should return a reference.

Source/WebKit/chromium/src/WebViewImpl.cpp

 /*
  * Copyright (C) 2011, 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 1536 matching lines @@
 Frame* WebViewImpl::focusedWebCoreFrame() const
 {
     return m_page ? m_page->focusController()->focusedOrMainFrame() : 0;
 }
 
 WebViewImpl* WebViewImpl::fromPage(Page* page)
 {
     if (!page)
         return 0;
 
-    ChromeClientImpl* chromeClient = static_cast<ChromeClientImpl*>(page->chrome()->client());
+    ChromeClientImpl* chromeClient = static_cast<ChromeClientImpl*>(page->chrome().client());
     return static_cast<WebViewImpl*>(chromeClient->webView());
 }
 
 // WebWidget ------------------------------------------------------------------
 
 void WebViewImpl::close()
 {
     if (m_page) {
         // Initiate shutdown for the entire frameset.  This will cause a lot of
         // notifications to be sent.
@@ skipping 2582 matching lines @@
 }
 
 bool WebViewImpl::shouldDisableDesktopWorkarounds()
 {
     ViewportArguments arguments = mainFrameImpl()->frame()->document()->viewportArguments();
     return arguments.width == ViewportArguments::ValueDeviceWidth || !arguments.userZoom
         || (arguments.minZoom == arguments.maxZoom && arguments.minZoom != ViewportArguments::ValueAuto);
 }
 
 } // namespace WebKit