Add flags for CrOS Component using Feature API

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 1048 matching lines @@
 
 // Description for the flag for wallpaper boot animation (except for OOBE).
 extern const char kBootAnimationDescription[];
 
 // Name for the flag for enabling Instant Tethering.
 extern const char kTetherName[];
 
 // Description for the flag for enabling Instant Tethering.
 extern const char kTetherDescription[];
 
+// Name for the flag for CrOS Component.
+extern const char kCrOSComponentName[];
+
+// Description for the flag for CrOS Component.
+extern const char kCrOSComponentDescription[];
+
 #endif  // defined(OS_CHROMEOS)
 
 // Name of the flag for accelerated video decode where available.
 extern const char kAcceleratedVideoDecodeName[];
 
 // Description for the flag for accelerated video decode where available.
 extern const char kAcceleratedVideoDecodeDescription[];
 
 // Name/Description for the "enable-hdr" flag.
 extern const char kEnableHDRName[];
@@ skipping 2272 matching lines @@
 extern const char kEnableHeapProfilingDescription[];
 
 // Descriptions of the different heap profiling modes.
 extern const char kEnableHeapProfilingModePseudo[];
 extern const char kEnableHeapProfilingModeNative[];
 extern const char kEnableHeapProfilingTaskProfiler[];
 
 }  // namespace flag_descriptions
 
 #endif  // CHROME_BROWSER_FLAG_DESCRIPTIONS_H_