Cleanup various WebView/WebFrame APIs to properly handle remote frames.

Source/web/WebRemoteFrameImpl.h

Index: Source/web/WebRemoteFrameImpl.h
diff --git a/Source/web/WebRemoteFrameImpl.h b/Source/web/WebRemoteFrameImpl.h
index a7a1b6b5fe54b1f66c8fdaf3f7298ea5cc02df61..8f582f386099e24f91a9e77687cd92dec942b24b 100644
--- a/Source/web/WebRemoteFrameImpl.h
+++ b/Source/web/WebRemoteFrameImpl.h
@@ -50,9 +50,6 @@ public:
     virtual bool hasVerticalScrollbar() const OVERRIDE;
     virtual WebView* view() const OVERRIDE;
     virtual void removeChild(WebFrame*) OVERRIDE;
-    virtual WebFrame* traversePrevious(bool wrap) const OVERRIDE;
-    virtual WebFrame* traverseNext(bool wrap) const OVERRIDE;
-    virtual WebFrame* findChildByName(const WebString&) const OVERRIDE;
     virtual WebDocument document() const OVERRIDE;
     virtual WebPerformance performance() const OVERRIDE;
     virtual bool dispatchBeforeUnloadEvent() OVERRIDE;
@@ -184,6 +181,8 @@ public:
     void setWebCoreFrame(PassRefPtr<WebCore::RemoteFrame>);
     WebCore::RemoteFrame* frame() const { return m_frame.get(); }
 
+    static WebRemoteFrameImpl* fromFrame(WebCore::RemoteFrame&);
+
 private:
     RemoteFrameClient m_frameClient;
     RefPtr<WebCore::RemoteFrame> m_frame;