Easy Unlock: Add support for hard locking

chrome/browser/signin/easy_unlock_screenlock_state_handler.h

 // Copyright 2014 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_SIGNIN_EASY_UNLOCK_SCREENLOCK_STATE_HANDLER_H_
 #define CHROME_BROWSER_SIGNIN_EASY_UNLOCK_SCREENLOCK_STATE_HANDLER_H_
 
 #include <string>
 
 #include "base/strings/string16.h"
@@ skipping 43 matching lines @@
 
   // Changes internal state to |new_state| and updates the user's screenlock
   // accordingly.
   void ChangeState(State new_state);
 
  private:
   // ScreenlockBridge::Observer:
   virtual void OnScreenDidLock() OVERRIDE;
   virtual void OnScreenDidUnlock() OVERRIDE;
 
+  // Updates icon's tooltip options.
+  // |trial_run|: Whether the trial Easy Unlock run is in progress.
   void UpdateTooltipOptions(
+      bool trial_run,
       ScreenlockBridge::UserPodCustomIconOptions* icon_options);
 
-  // Whether the tutorial message should be shown to the user. The message is
-  // shown only once, when the user encounters STATE_AUTHENTICATED for the first
-  // time (across sessions). After the tutorial message is shown,
-  // |MarkTutorialShown| should be called to prevent further tutorial message.
-  bool ShouldShowTutorial();
+  // Whether this is the first, trial Easy Unlock run. If this is the case, a
+  // tutorial message should be shown and hard-locking be disabled in
+  // Authenticated state. The trial run will be active if Easy Unlock never
+  // entered Authenticated state (across sessions).
+  bool IsTrialRun();
 
-  // Sets user preference that prevents showing of tutorial messages.
-  void MarkTutorialShown();
+  // Sets user preference that marks trial run completed.
+  void MarkTrialRunComplete();
 
   // Gets the name to be used for the device. The name depends on the device
   // type (example values: Chromebook and Chromebox).
   base::string16 GetDeviceName();
 
   // Updates the screenlock auth type if it has to be changed.
   void UpdateScreenlockAuthType();
 
   State state_;
   std::string user_email_;
   PrefService* pref_service_;
   ScreenlockBridge* screenlock_bridge_;
 
   DISALLOW_COPY_AND_ASSIGN(EasyUnlockScreenlockStateHandler);
 };
 
 #endif  // CHROME_BROWSER_SIGNIN_EASY_UNLOCK_SCREENLOCK_STATE_HANDLER_H_