Implement important sites dialog for desktop.

chrome/browser/flag_descriptions.h

 // Copyright 2017 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_FLAG_DESCRIPTIONS_H_
 #define CHROME_BROWSER_FLAG_DESCRIPTIONS_H_
 
 // Includes needed for macros allowing conditional compilation of some strings.
 #include "build/build_config.h"
 #include "build/buildflag.h"
@@ skipping 709 matching lines @@
 extern const char kPassiveEventListenerForceAllTrue[];
 
 // Name for the flag to adjust the default behaviour for passive event
 // listeners.
 extern const char kPassiveEventListenerDefaultName[];
 
 // Description for the flag to adjust default behaviour for passive event
 // listeners.
 extern const char kPassiveEventListenerDefaultDescription[];
 
-#if defined(OS_ANDROID)
-
 // Title for the flag for including important sites whitelisting in the clear
 // browsing dialog.
 extern const char kImportantSitesInCbdName[];
 
 // Description for the flag for using important sites whitelisting in the clear
 // browsing dialog.
 extern const char kImportantSitesInCbdDescription[];
 
-#endif  // defined(OS_ANDROID)
-
 #if defined(USE_ASH)
 
 // Title of the flag which specifies the shelf coloring in Chrome OS system UI.
 extern const char kAshShelfColor[];
 
 // Description of the flag which specifies the shelf coloring in Chrome OS
 // system UI.
 extern const char kAshShelfColorDescription[];
 
 // A shelf coloring style to be used by Chrome OS UI.
@@ skipping 2395 matching lines @@
 
 // Description of the about: flag enabling emoji, handwriting and voice input on
 // opt-in IME menu.
 extern const char kEnableEhvInputDescription[];
 
 #endif  // #if defined(OS_CHROMEOS)
 
 }  // namespace flag_descriptions
 
 #endif  // CHROME_BROWSER_FLAG_DESCRIPTIONS_H_