Revert of Fetch ARC Kiosk app name and icon from Android side.

chrome/browser/chromeos/app_mode/arc/arc_kiosk_app_service.h

Index: chrome/browser/chromeos/app_mode/arc/arc_kiosk_app_service.h
diff --git a/chrome/browser/chromeos/app_mode/arc/arc_kiosk_app_service.h b/chrome/browser/chromeos/app_mode/arc/arc_kiosk_app_service.h
index a737022289b5bf411ab31597eb311225f0e23038..ac3bf516a6d55d68786c1921868d871640730458 100644
--- a/chrome/browser/chromeos/app_mode/arc/arc_kiosk_app_service.h
+++ b/chrome/browser/chromeos/app_mode/arc/arc_kiosk_app_service.h
@@ -9,7 +9,6 @@
 #include "base/timer/timer.h"
 #include "chrome/browser/chromeos/app_mode/arc/arc_kiosk_app_launcher.h"
 #include "chrome/browser/chromeos/app_mode/arc/arc_kiosk_app_manager.h"
-#include "chrome/browser/ui/app_list/arc/arc_app_icon.h"
 #include "chrome/browser/ui/app_list/arc/arc_app_list_prefs.h"
 #include "components/arc/kiosk/arc_kiosk_bridge.h"
 #include "components/keyed_service/core/keyed_service.h"
@@ -36,8 +35,7 @@
       public ArcAppListPrefs::Observer,
       public ArcKioskAppManager::ArcKioskAppManagerObserver,
       public arc::ArcKioskBridge::Delegate,
-      public ArcKioskAppLauncher::Delegate,
-      public ArcAppIcon::Observer {
+      public ArcKioskAppLauncher::Delegate {
  public:
   class Delegate {
    public:
@@ -81,9 +79,6 @@
   // ArcKioskAppLauncher::Delegate overrides
   void OnAppWindowLaunched() override;
 
-  // ArcAppIcon::Observer overrides
-  void OnIconUpdated(ArcAppIcon* icon) override;
-
  private:
   explicit ArcKioskAppService(Profile* profile);
   ~ArcKioskAppService() override;
@@ -91,8 +86,6 @@
   std::string GetAppId();
   // Called when app should be started or stopped.
   void PreconditionsChanged();
-  // Updates local cache with proper name and icon.
-  void RequestNameAndIconUpdate();
 
   Profile* const profile_;
   bool maintenance_session_running_ = false;
@@ -100,7 +93,6 @@
   ArcKioskAppManager* app_manager_;
   std::string app_id_;
   std::unique_ptr<ArcAppListPrefs::AppInfo> app_info_;
-  std::unique_ptr<ArcAppIcon> app_icon_;
   int32_t task_id_ = -1;
   std::unique_ptr<PrefChangeRegistrar> pref_change_registrar_;
   // Keeps track whether the app is already launched