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

chrome/browser/ui/ash/launcher/arc_app_window_launcher_controller.h

 // Copyright 2016 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_UI_ASH_LAUNCHER_ARC_APP_WINDOW_LAUNCHER_CONTROLLER_H_
 #define CHROME_BROWSER_UI_ASH_LAUNCHER_ARC_APP_WINDOW_LAUNCHER_CONTROLLER_H_
 
 #include <map>
 #include <memory>
 #include <vector>
@@ skipping 23 matching lines @@
 class ArcAppWindowLauncherController : public AppWindowLauncherController,
                                        public aura::EnvObserver,
                                        public aura::WindowObserver,
                                        public ash::ShellObserver,
                                        public ArcAppListPrefs::Observer {
  public:
   ArcAppWindowLauncherController(ChromeLauncherController* owner,
                                  ash::ShelfDelegate* shelf_delegate);
   ~ArcAppWindowLauncherController() override;
 
-  // Returns shelf app id. Play Store app is mapped to Arc platform host app.
+  // Returns shelf app id. Play Store app is mapped to ARC platform host app.
   static std::string GetShelfAppIdFromArcAppId(const std::string& arc_app_id);
 
-  // Returns Arc app id. Arc platform host app is mapped to Play Store app.
+  // Returns ARC app id. ARC platform host app is mapped to Play Store app.
   static std::string GetArcAppIdFromShelfAppId(const std::string& shelf_app_id);
 
-  // Returns Arc task id for the window.
+  // Returns ARC task id for the window.
   static int GetWindowTaskId(aura::Window* window);
 
   // AppWindowLauncherController:
   void ActiveUserChanged(const std::string& user_email) override;
   void AdditionalUserAddedToSession(Profile* profile) override;
 
   // aura::EnvObserver:
   void OnWindowInitialized(aura::Window* window) override;
 
   // aura::WindowObserver:
@@ skipping 63 matching lines @@
   TaskIdToAppWindowInfo task_id_to_app_window_info_;
   ShelfGroupToAppControllerMap app_shelf_group_to_controller_map_;
   std::vector<aura::Window*> observed_windows_;
   Profile* observed_profile_ = nullptr;
   bool observing_shell_ = false;
 
   DISALLOW_COPY_AND_ASSIGN(ArcAppWindowLauncherController);
 };
 
 #endif  // CHROME_BROWSER_UI_ASH_LAUNCHER_ARC_APP_WINDOW_LAUNCHER_CONTROLLER_H_