Convert HTMLFrameOwnerElement and FocusController to use Frame.

Source/core/page/EventHandler.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2012 Digia Plc. and/or its subsidiary(-ies)
  *
  * 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.
@@ skipping 1696 matching lines @@
     // There is something of a webcompat angle to this well, as highlighted by
     // crbug.com/14608. Pages can clear text boxes 'onclick' and, if we paste on
     // down then the text is pasted just before the onclick handler runs and
     // clears the text box. So it's important this happens after the event
     // handlers have been fired.
     if (mouseEvent.type() != PlatformEvent::MouseReleased)
         return false;
 
     if (!m_frame->page())
         return false;
-    LocalFrame* focusFrame = m_frame->page()->focusController().focusedOrMainFrame();
+    LocalFrame* focusFrame = toLocalFrame(m_frame->page()->focusController().focusedOrMainFrame());
     // Do not paste here if the focus was moved somewhere else.
     if (m_frame == focusFrame && m_frame->editor().behavior().supportsGlobalSelection())
         return m_frame->editor().command("PasteGlobalSelection").execute();
 
     return false;
 }
 
 
 bool EventHandler::dispatchDragEvent(const AtomicString& eventType, Node* dragTarget, const PlatformMouseEvent& event, Clipboard* clipboard)
 {
@@ skipping 15 matching lines @@
 }
 
 static bool targetIsFrame(Node* target, LocalFrame*& frame)
 {
     if (!target)
         return false;
 
     if (!target->hasTagName(frameTag) && !target->hasTagName(iframeTag))
         return false;
 
-    frame = toHTMLFrameElementBase(target)->contentFrame();
+    frame = toLocalFrame(toHTMLFrameElementBase(target)->contentFrame());
     return true;
 }
 
 static bool findDropZone(Node* target, Clipboard* clipboard)
 {
     Element* element = target->isElementNode() ? toElement(target) : target->parentElement();
     for (; element; element = element->parentElement()) {
         bool matched = false;
         AtomicString dropZoneStr = element->fastGetAttribute(webkitdropzoneAttr);
 
@@ skipping 2262 matching lines @@
 unsigned EventHandler::accessKeyModifiers()
 {
 #if OS(MACOSX)
     return PlatformEvent::CtrlKey | PlatformEvent::AltKey;
 #else
     return PlatformEvent::AltKey;
 #endif
 }
 
 } // namespace WebCore