Get rid of the RenderViewType concept in content, since it was only used by Chrome. Store the enum…

content/public/common/view_type.h

-// Copyright (c) 2012 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 CONTENT_PUBLIC_COMMON_VIEW_TYPE_H_
-#define CONTENT_PUBLIC_COMMON_VIEW_TYPE_H_
-#pragma once
-
-namespace content {
-
-// Icky RTTI used by a few systems to distinguish the host type of a given
-// RenderViewHost or WebContents.
-//
-// TODO(aa): Remove this and teach those systems to keep track of their own
-// data.
-enum ViewTypeValues {
-  VIEW_TYPE_INVALID,
-  VIEW_TYPE_INTERSTITIAL_PAGE,
-  VIEW_TYPE_CONTENT_END
-};
-
-typedef int ViewType;
-
-}  // namespace content
-
-#endif  // CONTENT_PUBLIC_COMMON_VIEW_TYPE_H_