Move the ViewType enum to extensions\common.

chrome/browser/view_type_utils.cc

-// 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.
-
-#include "chrome/browser/view_type_utils.h"
-
-#include "base/lazy_instance.h"
-#include "content/public/browser/web_contents.h"
-
-using content::WebContents;
-
-namespace chrome {
-
-namespace {
-
-const char kViewTypeUserDataKey[] = "ViewTypeUserData";
-
-class ViewTypeUserData : public base::SupportsUserData::Data {
- public:
-  explicit ViewTypeUserData(ViewType type) : type_(type) {}
-  virtual ~ViewTypeUserData() {}
-  ViewType type() { return type_; }
-
- private:
-  ViewType type_;
-};
-
-}  // namespace
-
-ViewType GetViewType(WebContents* tab) {
-  if (!tab)
-    return VIEW_TYPE_INVALID;
-
-  ViewTypeUserData* user_data = static_cast<ViewTypeUserData*>(
-      tab->GetUserData(&kViewTypeUserDataKey));
-
-  return user_data ? user_data->type() : VIEW_TYPE_INVALID;
-}
-
-void SetViewType(WebContents* tab, ViewType type) {
-  tab->SetUserData(&kViewTypeUserDataKey,
-                   new ViewTypeUserData(type));
-}
-
-}  // namespace chrome