Convert HTMLFrameOwnerElement and FocusController to use Frame.

Source/core/frame/LocalFrame.cpp

Index: Source/core/frame/LocalFrame.cpp
diff --git a/Source/core/frame/LocalFrame.cpp b/Source/core/frame/LocalFrame.cpp
index 87b0b5e5638065a9bcc29fd04ed044ab02271ae4..35b9cd687e4ef09b1df46b4e9c66187eae5494d2 100644
--- a/Source/core/frame/LocalFrame.cpp
+++ b/Source/core/frame/LocalFrame.cpp
@@ -103,10 +103,6 @@ inline LocalFrame::LocalFrame(FrameLoaderClient* client, FrameHost* host, HTMLFr
     , m_orientation(0)
     , m_inViewSourceMode(false)
 {
-    if (this->ownerElement()) {
-        page()->incrementSubframeCount();
-        this->ownerElement()->setContentFrame(*this);
-    }
 }
 
 PassRefPtr<LocalFrame> LocalFrame::create(FrameLoaderClient* client, FrameHost* host, HTMLFrameOwnerElement* ownerElement)
@@ -123,8 +119,6 @@ LocalFrame::~LocalFrame()
     setView(nullptr);
     loader().clear();
     setDOMWindow(nullptr);
-
-    disconnectOwnerElement();
 }
 
 bool LocalFrame::inScope(TreeScope* scope) const
@@ -281,18 +275,6 @@ void LocalFrame::detachFromFrameHost()
     Frame::detachFromFrameHost();
 }
 
-void LocalFrame::disconnectOwnerElement()
-{
-    if (ownerElement()) {
-        if (Document* doc = document())
-            doc->topDocument().clearAXObjectCache();
-        ownerElement()->clearContentFrame();
-        if (page())
-            page()->decrementSubframeCount();
-    }
-    m_ownerElement = 0;
-}
-
 String LocalFrame::documentTypeString() const
 {
     if (DocumentType* doctype = document()->doctype())