Add flag for zip archiver on files app.

chrome/browser/flag_descriptions.cc

 // 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.
 
 #include "chrome/browser/flag_descriptions.h"
 
 namespace flag_descriptions {
 
 //  Material Design version of chrome://bookmarks
 
@@ skipping 2261 matching lines @@
 const char kEnableAndroidWallpapersAppDescription[] =
     "Enables the Android Wallpapers App as the default Wallpaper App on "
     "Chrome OS.";
 
 const char kEnableTouchSupportForScreenMagnifierName[] =
     "Touch support for screen magnifier";
 
 const char kEnableTouchSupportForScreenMagnifierDescription[] =
     "Enables touch support for screen magnifier";
 
+const char kEnableZipArchiverOnFileManagerName[] =
+    "ZIP archiver for Drive";
+
+const char kEnableZipArchiverOnFileManagerDescription[] =
+    "Enable the ability to archive and unpack files on Drive in the Files app";
+
 #endif  // defined(OS_CHROMEOS)
 
 #if defined(OS_ANDROID)
 
 const char kContentSuggestionsCategoryOrderName[] =
     "Default content suggestions category order (e.g. on NTP)";
 
 const char kContentSuggestionsCategoryOrderDescription[] =
     "Set default order of content suggestion categories (e.g. on the NTP).";
 
@@ skipping 641 matching lines @@
 const char kEnableEhvInputName[] =
     "Emoji, handwriting and voice input on opt-in IME menu";
 
 const char kEnableEhvInputDescription[] =
     "Enable access to emoji, handwriting and voice input form opt-in IME "
     "menu.";
 
 #endif  // #if defined(OS_CHROMEOS)
 
 }  // namespace flag_descriptions