Refactor external_install_ui

chrome/browser/extensions/external_install_ui.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_EXTENSIONS_EXTERNAL_INSTALL_UI_H_
-#define CHROME_BROWSER_EXTENSIONS_EXTERNAL_INSTALL_UI_H_
-
-class Browser;
-class ExtensionService;
-
-namespace extensions {
-
-class Extension;
-
-// Adds/Removes a global error informing the user that an external extension
-// was installed. If |is_new_profile| is true, then this error is from the
-// first time our profile checked for new external extensions.
-void AddExternalInstallError(ExtensionService* service,
-                             const Extension* extension,
-                             bool is_new_profile);
-void RemoveExternalInstallError(ExtensionService* service);
-
-bool HasExternalInstallError(ExtensionService* service);
-
-// Used for testing.
-bool HasExternalInstallBubble(ExtensionService* service);
-
-}  // namespace extensions
-
-#endif  // CHROME_BROWSER_EXTENSIONS_EXTERNAL_INSTALL_UI_H_