Add a flag to enable Translate Compact Infobar on Android.

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 1477 matching lines @@
 extern const char kHostedAppQuitNotificationDescription[];
 
 #if defined(OS_ANDROID)
 
 // Name of the flag for the pull-to-refresh effect.
 extern const char kPullToRefreshEffectName[];
 
 // Description of the flag for the pull-to-refresh effect.
 extern const char kPullToRefreshEffectDescription[];
 
+// Name of the flag for the translate compact infobar.
+extern const char kTranslateCompactUIName[];
+
+// Description of the flag for translate compact infobar.
+extern const char kTranslateCompactUIDescription[];
+
 #endif  // defined(OS_ANDROID)
 
 #if defined(OS_MACOSX)
 
 // Name of the flag to enable the new Translate UX.
 extern const char kTranslateNewUxName[];
 
 // Description for the flag to enable the new Translate UX.
 extern const char kTranslateNewUxDescription[];
 
@@ skipping 1849 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_