Revert 170347 "Convert HTMLFrameOwnerElement and FocusController..."

Source/core/html/HTMLFrameElementBase.cpp

Index: Source/core/html/HTMLFrameElementBase.cpp
===================================================================
--- Source/core/html/HTMLFrameElementBase.cpp	(revision 170478)
+++ Source/core/html/HTMLFrameElementBase.cpp	(working copy)
@@ -91,9 +91,9 @@
 
     if (!loadOrRedirectSubframe(url, m_frameName, lockBackForwardList))
         return;
-    if (!contentFrame() || scriptURL.isEmpty() || !contentFrame()->isLocalFrame())
+    if (!contentFrame() || scriptURL.isEmpty())
         return;
-    toLocalFrame(contentFrame())->script().executeScriptIfJavaScriptURL(scriptURL);
+    contentFrame()->script().executeScriptIfJavaScriptURL(scriptURL);
 }
 
 void HTMLFrameElementBase::parseAttribute(const QualifiedName& name, const AtomicString& value)
@@ -159,10 +159,8 @@
     HTMLFrameOwnerElement::attach(context);
 
     if (RenderPart* part = renderPart()) {
-        if (Frame* frame = contentFrame()) {
-            if (frame->isLocalFrame())
-                part->setWidget(toLocalFrame(frame)->view());
-        }
+        if (LocalFrame* frame = contentFrame())
+            part->setWidget(frame->view());
     }
 }