Move screenlock_bridge to components/proximity_auth

components/proximity_auth/screenlock_bridge.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_SCREENLOCK_BRIDGE_H_
-#define CHROME_BROWSER_SIGNIN_SCREENLOCK_BRIDGE_H_
+#ifndef COMPONENTS_PROXIMITY_AUTH_SCREENLOCK_BRIDGE_H_
+#define COMPONENTS_PROXIMITY_AUTH_SCREENLOCK_BRIDGE_H_
 
 #include <string>
 
 #include "base/basictypes.h"
-#include "base/lazy_instance.h"
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/observer_list.h"
 #include "base/strings/string16.h"
 #include "base/values.h"
 
+namespace content {
+class BrowserContext;
+}  // namespace content
 
-class Profile;
+namespace proximity_auth {
+
+class ProximityAuthClient;
 
 // ScreenlockBridge brings together the screenLockPrivate API and underlying
 // support. On ChromeOS, it delegates calls to the ScreenLocker. On other
 // platforms, it delegates calls to UserManagerUI (and friends).
 // TODO(tbarzic): Rename ScreenlockBridge to SignInScreenBridge, as this is not
 // used solely for the lock screen anymore.
 class ScreenlockBridge {
  public:
+  explicit ScreenlockBridge(ProximityAuthClient* client);

[Ilya Sherman, 2015/04/24 21:22:02]

Please document the lifetime expectations for the |client|.

[msarda, 2015/04/27 11:29:25]

Done.

+  ~ScreenlockBridge();
+
   // User pod icons supported by lock screen / signin screen UI.
   enum UserPodCustomIcon {
     USER_POD_CUSTOM_ICON_NONE,
     USER_POD_CUSTOM_ICON_HARDLOCKED,
     USER_POD_CUSTOM_ICON_LOCKED,
     USER_POD_CUSTOM_ICON_LOCKED_TO_BE_ACTIVATED,
     // TODO(isherman): The "locked with proximity hint" icon is currently the
     // same as the "locked" icon. It's treated as a separate case to allow an
     // easy asset swap without changing the code, in case we decide to use a
     // different icon for this case. If we definitely decide against that, then
@@ skipping 54 matching lines @@
     // user_pod_row.js.
     enum AuthType {
       OFFLINE_PASSWORD = 0,
       ONLINE_SIGN_IN = 1,
       NUMERIC_PIN = 2,
       USER_CLICK = 3,
       EXPAND_THEN_USER_CLICK = 4,
       FORCE_OFFLINE_PASSWORD = 5
     };
 
-    enum ScreenType {
-      SIGNIN_SCREEN = 0,
-      LOCK_SCREEN = 1,
-      OTHER_SCREEN = 2
-    };
+    enum ScreenType { SIGNIN_SCREEN = 0, LOCK_SCREEN = 1, OTHER_SCREEN = 2 };
 
     // Displays |message| in a banner on the lock screen.
     virtual void ShowBannerMessage(const base::string16& message) = 0;
 
     // Shows a custom icon in the user pod on the lock screen.
     virtual void ShowUserPodCustomIcon(
         const std::string& user_email,
         const UserPodCustomIconOptions& icon) = 0;
 
     // Hides the custom icon in user pod for a user.
     virtual void HideUserPodCustomIcon(const std::string& user_email) = 0;
 
     // (Re)enable lock screen UI.
     virtual void EnableInput() = 0;
 
     // Set the authentication type to be used on the lock screen.
     virtual void SetAuthType(const std::string& user_email,
                              AuthType auth_type,
                              const base::string16& auth_value) = 0;
 
     // Returns the authentication type used for a user.
     virtual AuthType GetAuthType(const std::string& user_email) const = 0;
 
     // Returns the type of the screen -- a signin or a lock screen.
     virtual ScreenType GetScreenType() const = 0;
 
-    // Unlock from easy unlock app for a user.
+    // Unlocks from easy unlock app for a user.
     virtual void Unlock(const std::string& user_email) = 0;
 
     // Attempts to login the user using an easy unlock key.
     virtual void AttemptEasySignin(const std::string& user_email,
                                    const std::string& secret,
                                    const std::string& key_label) = 0;
 
    protected:
     virtual ~LockHandler() {}
   };
 
   class Observer {
    public:
     // Invoked after the screen is locked.
     virtual void OnScreenDidLock(LockHandler::ScreenType screen_type) = 0;
 
     // Invoked after the screen lock is dismissed.
     virtual void OnScreenDidUnlock(LockHandler::ScreenType screen_type) = 0;
 
     // Invoked when the user focused on the lock screen changes.
     virtual void OnFocusedUserChanged(const std::string& user_id) = 0;
 
    protected:
     virtual ~Observer() {}
   };
 
-  static ScreenlockBridge* Get();
-  static std::string GetAuthenticatedUserEmail(const Profile* profile);
-
   void SetLockHandler(LockHandler* lock_handler);
   void SetFocusedUser(const std::string& user_id);
 
   bool IsLocked() const;
-  void Lock(Profile* profile);
-  void Unlock(Profile* profile);
+  void Lock(content::BrowserContext* browser_context);
+  void Unlock(content::BrowserContext* browser_context);
 
   void AddObserver(Observer* observer);
   void RemoveObserver(Observer* observer);
 
   LockHandler* lock_handler() { return lock_handler_; }
 
   std::string focused_user_id() const { return focused_user_id_; }
 
  private:
-  friend struct base::DefaultLazyInstanceTraits<ScreenlockBridge>;
-  friend struct base::DefaultDeleter<ScreenlockBridge>;
-
-  ScreenlockBridge();
-  ~ScreenlockBridge();
-
-  LockHandler* lock_handler_;  // Not owned
+  ProximityAuthClient* client_;  // Not owned. Must outlive this object.
+  LockHandler* lock_handler_;    // Not owned
   // The last focused user's id.
   std::string focused_user_id_;
   ObserverList<Observer, true> observers_;
 
   DISALLOW_COPY_AND_ASSIGN(ScreenlockBridge);
 };
 
-#endif  // CHROME_BROWSER_SIGNIN_SCREENLOCK_BRIDGE_H_
+}  // namespace proximity_auth
+
+#endif  // COMPONENTS_PROXIMITY_AUTH_SCREENLOCK_BRIDGE_H_