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

chrome/browser/ui/ash/launcher/launcher_controller_helper.cc

Index: chrome/browser/ui/ash/launcher/launcher_controller_helper.cc
diff --git a/chrome/browser/ui/ash/launcher/launcher_controller_helper.cc b/chrome/browser/ui/ash/launcher/launcher_controller_helper.cc
index 3031be5ca578f1de5a1834f3c360e65b2f410f87..a43b394646275147499701d3fbfc19b89e963f9b 100644
--- a/chrome/browser/ui/ash/launcher/launcher_controller_helper.cc
+++ b/chrome/browser/ui/ash/launcher/launcher_controller_helper.cc
@@ -109,7 +109,7 @@ base::string16 LauncherControllerHelper::GetAppTitle(
   if (app_id.empty())
     return base::string16();
 
-  // Get the title if the app is an Arc app.
+  // Get the title if the app is an ARC app.
   ArcAppListPrefs* arc_prefs = ArcAppListPrefs::Get(profile);
   const std::string arc_app_id =
       ArcAppWindowLauncherController::GetArcAppIdFromShelfAppId(app_id);