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

chrome/browser/view_type_utils.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 CHROME_BROWSER_VIEW_TYPE_UTILS_H_
+#define CHROME_BROWSER_VIEW_TYPE_UTILS_H_
+#pragma once
+
+#include "chrome/common/view_type.h"
+
+namespace content {
+class WebContents;
+}
+
+namespace chrome {
+
+// Get/Set the type of a WebContents.
+// GetViewType handles a NULL |tab| for convenience by returning
+// VIEW_TYPE_INVALID.
+ViewType GetViewType(content::WebContents* tab);
+void SetViewType(content::WebContents* tab, ViewType type);
+
+}  // namespace chrome
+
+#endif  // CHROME_BROWSER_VIEW_TYPE_UTILS_H_