Move guest_view to extensions.

chrome/browser/guest_view/guest_view.h

-// 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.
-
-#ifndef CHROME_BROWSER_GUEST_VIEW_GUEST_VIEW_H_
-#define CHROME_BROWSER_GUEST_VIEW_GUEST_VIEW_H_
-
-#include "base/bind.h"
-#include "chrome/browser/guest_view/guest_view_base.h"
-#include "content/public/browser/render_frame_host.h"
-
-// A GuestView is the templated base class for out-of-process frames in the
-// chrome layer. GuestView is templated on its derived type to allow for type-
-// safe access. See GuestViewBase for more information.
-template <typename T>
-class GuestView : public GuestViewBase {
- public:
-  static void Register() {
-    GuestViewBase::RegisterGuestViewType(T::Type, base::Bind(&T::Create));
-  }
-
-  static T* From(int embedder_process_id, int guest_instance_id) {
-    GuestViewBase* guest =
-        GuestViewBase::From(embedder_process_id, guest_instance_id);
-    if (!guest)
-      return NULL;
-    return guest->As<T>();
-  }
-
-  static T* FromWebContents(content::WebContents* contents) {
-    GuestViewBase* guest = GuestViewBase::FromWebContents(contents);
-    return guest ? guest->As<T>() : NULL;
-  }
-
-  static T* FromFrameID(int render_process_id, int render_frame_id) {
-    content::RenderFrameHost* render_frame_host =
-        content::RenderFrameHost::FromID(render_process_id, render_frame_id);
-    if (!render_frame_host) {
-      return NULL;
-    }
-    content::WebContents* web_contents =
-        content::WebContents::FromRenderFrameHost(render_frame_host);
-    return FromWebContents(web_contents);
-  }
-
-  T* GetOpener() const {
-    GuestViewBase* guest = GuestViewBase::GetOpener();
-    if (!guest)
-      return NULL;
-    return guest->As<T>();
-  }
-
-  void SetOpener(T* opener) {
-    GuestViewBase::SetOpener(opener);
-  }
-
-  // GuestViewBase implementation.
-  virtual const char* GetViewType() const OVERRIDE {
-    return T::Type;
-  }
-
- protected:
-  GuestView(content::BrowserContext* browser_context,
-            int guest_instance_id)
-      : GuestViewBase(browser_context, guest_instance_id) {}
-  virtual ~GuestView() {}
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(GuestView);
-};
-
-#endif  // CHROME_BROWSER_GUEST_VIEW_GUEST_VIEW_H_