Remove (almost all of) //sky/engine/web

sky/engine/web/WebFrame.cpp

-// Copyright 2014 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "sky/engine/public/web/WebFrame.h"
-
-#include <algorithm>
-#include "sky/engine/web/WebLocalFrameImpl.h"
-
-namespace blink {
-
-Frame* toCoreFrame(const WebFrame* frame)
-{
-    if (!frame)
-        return 0;
-
-    return static_cast<Frame*>(toWebLocalFrameImpl(frame)->frame());
-}
-
-WebFrame* WebFrame::fromFrame(Frame* frame)
-{
-    if (!frame)
-        return 0;
-    return WebLocalFrameImpl::fromFrame(toLocalFrame(*frame));
-}
-
-WebFrame::WebFrame()
-{
-}
-
-WebFrame::~WebFrame()
-{
-}
-
-} // namespace blink