Page::chrome() should return a reference.

Source/core/page/FocusController.cpp

 /*
  * Copyright (C) 2006, 2007 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nuanti Ltd.
  *
  * 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
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 282 matching lines @@
 
     if (caretBrowsing && !currentNode)
         currentNode = frame->selection()->start().deprecatedNode();
 
     document->updateLayoutIgnorePendingStylesheets();
 
     RefPtr<Node> node = findFocusableNodeAcrossFocusScope(direction, FocusNavigationScope::focusNavigationScopeOf(currentNode ? currentNode : document), currentNode, event);
 
     if (!node) {
         // We didn't find a node to focus, so we should try to pass focus to Chrome.
-        if (!initialFocus && m_page->chrome()->canTakeFocus(direction)) {
+        if (!initialFocus && m_page->chrome().canTakeFocus(direction)) {
             document->setFocusedNode(0);
             setFocusedFrame(0);
-            m_page->chrome()->takeFocus(direction);
+            m_page->chrome().takeFocus(direction);
             return true;
         }
 
         // Chrome doesn't want focus, so we should wrap focus.
         node = findFocusableNodeRecursively(direction, FocusNavigationScope::focusNavigationScopeOf(m_page->mainFrame()->document()), 0, event);
         node = findFocusableNodeDecendingDownIntoFrameDocument(direction, node.get(), event);
 
         if (!node)
             return false;
     }
@@ skipping 552 matching lines @@
         startingRect = nodeRectInAbsoluteCoordinates(container, true /* ignore border */);
         container = scrollableEnclosingBoxOrParentFrameForNodeInDirection(direction, container);
         if (container && container->isDocumentNode())
             toDocument(container)->updateLayoutIgnorePendingStylesheets();
     } while (!consumed && container);
 
     return consumed;
 }
 
 } // namespace WebCore