Convert HTMLFrameOwnerElement and FocusController to use Frame.

Source/web/WebFrameImpl.cpp

 /*
  * Copyright (C) 2009 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 742 matching lines @@
     Document* document = frame()->document();
     ASSERT(document);
 
     RefPtrWillBeRawPtr<XPathResult> xpathResult = DocumentXPathEvaluator::evaluate(*document, xpath, document, nullptr, XPathResult::ORDERED_NODE_ITERATOR_TYPE, 0, IGNORE_EXCEPTION);
     if (!xpathResult)
         return 0;
 
     Node* node = xpathResult->iterateNext(IGNORE_EXCEPTION);
     if (!node || !node->isFrameOwnerElement())
         return 0;
-    return fromFrame(toHTMLFrameOwnerElement(node)->contentFrame());
+    return fromFrame(toLocalFrame(toHTMLFrameOwnerElement(node)->contentFrame()));
 }
 
 WebDocument WebFrameImpl::document() const
 {
     if (!frame() || !frame()->document())
         return WebDocument();
     return WebDocument(frame()->document());
 }
 
 WebPerformance WebFrameImpl::performance() const
@@ skipping 1445 matching lines @@
     if (!frame)
         return 0;
     return toFrameLoaderClientImpl(frame->loader().client())->webFrame();
 }
 
 WebFrameImpl* WebFrameImpl::fromFrameOwnerElement(Element* element)
 {
     // FIXME: Why do we check specifically for <iframe> and <frame> here? Why can't we get the WebFrameImpl from an <object> element, for example.
     if (!element || !element->isFrameOwnerElement() || (!element->hasTagName(HTMLNames::iframeTag) && !element->hasTagName(HTMLNames::frameTag)))
         return 0;
-    return fromFrame(toHTMLFrameOwnerElement(element)->contentFrame());
+    return fromFrame(toLocalFrame(toHTMLFrameOwnerElement(element)->contentFrame()));
 }
 
 WebViewImpl* WebFrameImpl::viewImpl() const
 {
     if (!frame())
         return 0;
     return WebViewImpl::fromPage(frame()->page());
 }
 
 WebDataSourceImpl* WebFrameImpl::dataSourceImpl() const
@@ skipping 242 matching lines @@
 
         // There is a possibility that the frame being detached was the only
         // pending one. We need to make sure final replies can be sent.
         flushCurrentScopingEffort(m_findRequestIdentifier);
 
         cancelPendingScopingEffort();
     }
 }
 
 } // namespace blink