ui: Cleanup class/struct forward declarations

chrome/browser/chromeos/arc/arc_auth_service.h

Index: chrome/browser/chromeos/arc/arc_auth_service.h
diff --git a/chrome/browser/chromeos/arc/arc_auth_service.h b/chrome/browser/chromeos/arc/arc_auth_service.h
index 39d3e8a426fc97eb88a1047121d98e32b1ab6313..8092f6090cde23dd27dc2855342210a28592af3b 100644
--- a/chrome/browser/chromeos/arc/arc_auth_service.h
+++ b/chrome/browser/chromeos/arc/arc_auth_service.h
@@ -15,6 +15,8 @@
 #include "base/timer/timer.h"
 #include "chrome/browser/chromeos/arc/arc_auth_code_fetcher_delegate.h"
 #include "chrome/browser/chromeos/arc/arc_auth_context_delegate.h"
+#include "chrome/browser/chromeos/arc/arc_support_host.h"
+#include "chrome/browser/chromeos/arc/optin/arc_optin_preference_handler_observer.h"
 #include "chrome/browser/chromeos/policy/android_management_client.h"
 #include "components/arc/arc_bridge_service.h"
 #include "components/arc/arc_service.h"
@@ -36,13 +38,12 @@ namespace user_prefs {
 class PrefRegistrySyncable;
 }
 
-class ArcSupportHost;
-
 namespace arc {
 
 class ArcAndroidManagementChecker;
 class ArcAuthCodeFetcher;
 class ArcAuthContext;
+class ArcOptInPreferenceHandler;
 enum class ProvisioningResult : int;
 
 // This class proxies the request from the client to fetch an auth code from
@@ -51,6 +52,8 @@ class ArcAuthService : public ArcService,
                        public mojom::AuthHost,
                        public ArcBridgeService::Observer,
                        public InstanceHolder<mojom::AuthInstance>::Observer,
+                       public ArcSupportHost::Observer,
+                       public ArcOptInPreferenceHandlerObserver,
                        public ArcAuthContextDelegate,
                        public ArcAuthCodeFetcherDelegate,
                        public sync_preferences::PrefServiceSyncableObserver,
@@ -63,16 +66,6 @@ class ArcAuthService : public ArcService,
     ACTIVE,           // ARC is running.
   };
 
-  enum class UIPage {
-    NO_PAGE,              // Hide everything.
-    TERMS,                // Terms content page.
-    LSO_PROGRESS,         // LSO loading progress page.
-    LSO,                  // LSO page to enter user's credentials.
-    START_PROGRESS,       // Arc starting progress page.
-    ERROR,                // Arc start error page.
-    ERROR_WITH_FEEDBACK,  // Arc start error page, plus feedback button.
-  };
-
   class Observer {
    public:
     virtual ~Observer() = default;
@@ -184,6 +177,19 @@ class ArcAuthService : public ArcService,
   void OnAuthCodeSuccess(const std::string& auth_code) override;
   void OnAuthCodeFailed() override;
 
+  // ArcSupportHost::Observer:
+  void OnWindowClosed() override;
+  void OnTermsAgreed(bool is_metrics_enabled,
+                     bool is_backup_and_restore_enabled,
+                     bool is_location_service_enabled) override;
+  void OnAuthSucceeded(const std::string& auth_code) override;
+  void OnSendFeedbackClicked() override;
+
+  // arc::ArcOptInPreferenceHandlerObserver:
+  void OnMetricsModeChanged(bool enabled, bool managed) override;
+  void OnBackupAndRestoreModeChanged(bool enabled, bool managed) override;
+  void OnLocationServicesModeChanged(bool enabled, bool managed) override;
+
   // Stops ARC without changing ArcEnabled preference.
   void StopArc();
 
@@ -197,7 +203,7 @@ class ArcAuthService : public ArcService,
   void RemoveArcData();
 
   // Returns current page that has to be shown in OptIn UI.
-  UIPage ui_page() const { return ui_page_; }
+  ArcSupportHost::UIPage ui_page() const { return ui_page_; }
 
   // Returns current page status, relevant to the specific page.
   const base::string16& ui_page_status() const { return ui_page_status_; }
@@ -210,13 +216,14 @@ class ArcAuthService : public ArcService,
 
   void StartArc();
   // TODO(hidehiko): move UI methods/fields to ArcSupportHost.
-  void ShowUI(UIPage page, const base::string16& status);
+  void ShowUI(ArcSupportHost::UIPage page, const base::string16& status);
   void CloseUI();
-  void SetUIPage(UIPage page, const base::string16& status);
+  void SetUIPage(ArcSupportHost::UIPage page, const base::string16& status);
   void SetState(State state);
   void ShutdownBridge();
   void ShutdownBridgeAndCloseUI();
-  void ShutdownBridgeAndShowUI(UIPage page, const base::string16& status);
+  void ShutdownBridgeAndShowUI(ArcSupportHost::UIPage page,
+                               const base::string16& status);
   void OnOptInPreferenceChanged();
   void StartUI();
   void StartAndroidManagementClient();
@@ -251,7 +258,7 @@ class ArcAuthService : public ArcService,
   base::ObserverList<Observer> observer_list_;
   std::unique_ptr<ArcAppLauncher> playstore_launcher_;
   std::string auth_code_;
-  UIPage ui_page_ = UIPage::NO_PAGE;
+  ArcSupportHost::UIPage ui_page_ = ArcSupportHost::UIPage::NO_PAGE;
   base::string16 ui_page_status_;
   bool clear_required_ = false;
   bool reenable_arc_ = false;
@@ -264,6 +271,8 @@ class ArcAuthService : public ArcService,
   // This should be moved to ArcSessionManager when the refactoring is
   // done.
   std::unique_ptr<ArcSupportHost> support_host_;
+  // Handles preferences and metrics mode.
+  std::unique_ptr<arc::ArcOptInPreferenceHandler> preference_handler_;
 
   std::unique_ptr<ArcAuthContext> context_;
   std::unique_ptr<ArcAuthCodeFetcher> auth_code_fetcher_;