s/\bArc\b/ARC/g for ARC related code.

chrome/browser/chromeos/extensions/wallpaper_manager_util.cc

Index: chrome/browser/chromeos/extensions/wallpaper_manager_util.cc
diff --git a/chrome/browser/chromeos/extensions/wallpaper_manager_util.cc b/chrome/browser/chromeos/extensions/wallpaper_manager_util.cc
index abe36d246553ab0b5173d1ceb1efa56cb6306c05..510103ddd7b04ee44c70c427f38fc2adccd4fafa 100644
--- a/chrome/browser/chromeos/extensions/wallpaper_manager_util.cc
+++ b/chrome/browser/chromeos/extensions/wallpaper_manager_util.cc
@@ -38,7 +38,7 @@ const char kEnableAndroidWallpapersApp[] =
 
 }  // namespace
 
-// Only if the current profile is the primary profile && Arc service is enabled
+// Only if the current profile is the primary profile && ARC service is enabled
 // && the Android Wallpapers App has been installed && the finch experiment or
 // chrome flag is enabled, launch the Android Wallpapers App. Otherwise launch
 // the old Chrome OS Wallpaper Picker App.
@@ -46,7 +46,7 @@ bool ShouldUseAndroidWallpapersApp(Profile* profile) {
   if (!chromeos::ProfileHelper::IsPrimaryProfile(profile))
     return false;
 
-  // Check if the ARC++ is enabled.
+  // Check if the ARC is enabled.
   const arc::ArcSessionManager* const arc_session_manager =
       arc::ArcSessionManager::Get();
   if (!arc_session_manager || !arc_session_manager->IsArcPlayStoreEnabled())