Fix AccessibilityExtensionLoader's handling of locked screen

chrome/browser/chromeos/accessibility/accessibility_extension_loader.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_ACCESSIBILITY_ACCESSIBILITY_EXTENSION_LOADER_H_
 #define CHROME_BROWSER_CHROMEOS_ACCESSIBILITY_ACCESSIBILITY_EXTENSION_LOADER_H_
 
 #include "base/callback.h"
 #include "base/files/file_path.h"
 #include "base/memory/weak_ptr.h"
 
-namespace content {
-class RenderViewHost;
-}
-
-class ExtensionService;
 class Profile;
 
 namespace chromeos {
 
 class AccessibilityExtensionLoader {
  public:
   AccessibilityExtensionLoader(const std::string& extension_id,
                                const base::FilePath& extension_path,
                                const base::Closure& unload_callback);
   ~AccessibilityExtensionLoader();
 
   void SetProfile(Profile* profile, const base::Closure& done_callback);
   void Load(Profile* profile,
             const std::string& init_script_str,
             const base::Closure& done_cb);
   void Unload();
-  void LoadToUserScreen(const base::Closure& done_cb);
-  void LoadToLockScreen(const base::Closure& done_cb);
   void LoadExtension(Profile* profile,
-                     content::RenderViewHost* render_view_host,
                      base::Closure done_cb);
 
-  bool loaded_on_lock_screen() { return loaded_on_lock_screen_; }
-
  private:
-  void InjectContentScriptAndCallback(ExtensionService* extension_service,
-                                      int render_process_id,
-                                      int render_view_id,
-                                      const base::Closure& done_cb);
-  void UnloadFromLockScreen();
   void UnloadExtensionFromProfile(Profile* profile);
 
   Profile* profile_;
   std::string extension_id_;
   base::FilePath extension_path_;
   std::string init_script_str_;
 
-  // Profile which the extension is currently loaded to.
-  // If nullptr, it is not loaded to any profile.
-  bool loaded_on_lock_screen_;
-  bool loaded_on_user_screen_;
+  bool loaded_;
 
   base::Closure unload_callback_;
 
   base::WeakPtrFactory<AccessibilityExtensionLoader> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(AccessibilityExtensionLoader);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_ACCESSIBILITY_ACCESSIBILITY_EXTENSION_LOADER_H_