arc: Provide progress to load TOS content for OptIn.

chrome/browser/chromeos/arc/arc_auth_service.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_CHROMEOS_ARC_ARC_AUTH_SERVICE_H_
 #define CHROME_BROWSER_CHROMEOS_ARC_ARC_AUTH_SERVICE_H_
 
 #include <memory>
 #include <ostream>
 #include <string>
@@ skipping 39 matching lines @@
  public:
   enum class State {
     NOT_INITIALIZED,  // Service is not initialized.
     STOPPED,          // ARC is not running.
     FETCHING_CODE,    // ARC may be running or not. Auth code is fetching.
     ACTIVE,           // ARC is running.
   };
 
   enum class UIPage {
     NO_PAGE,              // Hide everything.
-    START,                // Initial start page.
+    TERMS_PROGRESS,       // Terms loading progress page.
+    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;
@@ skipping 143 matching lines @@
   base::WeakPtrFactory<ArcAuthService> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ArcAuthService);
 };
 
 std::ostream& operator<<(std::ostream& os, const ArcAuthService::State& state);
 
 }  // namespace arc
 
 #endif  // CHROME_BROWSER_CHROMEOS_ARC_ARC_AUTH_SERVICE_H_