Move the ViewType enum to extensions\common.

chrome/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 CHROME_COMMON_VIEW_TYPE_H_
-#define CHROME_COMMON_VIEW_TYPE_H_
-
-namespace chrome {
-
-// 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 ViewType {
-  VIEW_TYPE_INVALID,
-  VIEW_TYPE_APP_SHELL,
-  VIEW_TYPE_BACKGROUND_CONTENTS,
-  VIEW_TYPE_EXTENSION_BACKGROUND_PAGE,
-  VIEW_TYPE_EXTENSION_DIALOG,
-  VIEW_TYPE_EXTENSION_INFOBAR,
-  VIEW_TYPE_EXTENSION_POPUP,
-  VIEW_TYPE_NOTIFICATION,
-  VIEW_TYPE_PANEL,
-  VIEW_TYPE_TAB_CONTENTS,
-};
-
-// Constant strings corresponding to the Type enumeration values.  Used
-// when converting JS arguments.
-extern const char kViewTypeAll[];
-extern const char kViewTypeAppShell[];
-extern const char kViewTypeBackgroundPage[];
-extern const char kViewTypeExtensionDialog[];
-extern const char kViewTypeInfobar[];
-extern const char kViewTypeNotification[];
-extern const char kViewTypePanel[];
-extern const char kViewTypePopup[];
-extern const char kViewTypeTabContents[];
-
-}  // namespace chrome
-
-#endif  // CHROME_COMMON_VIEW_TYPE_H_