Delete unused code for exclusive access permission prompting.

chrome/browser/ui/exclusive_access/mouse_lock_controller.h

 // Copyright (c) 2015 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_UI_EXCLUSIVE_ACCESS_MOUSE_LOCK_CONTROLLER_H_
 #define CHROME_BROWSER_UI_EXCLUSIVE_ACCESS_MOUSE_LOCK_CONTROLLER_H_
 
 #include "base/macros.h"
 #include "chrome/browser/ui/exclusive_access/exclusive_access_controller_base.h"
 #include "components/content_settings/core/common/content_settings.h"
 
 // This class implements mouselock behavior.
 class MouseLockController : public ExclusiveAccessControllerBase {
  public:
   explicit MouseLockController(ExclusiveAccessManager* manager);
   ~MouseLockController() override;
 
   bool IsMouseLocked() const;
-  bool IsMouseLockSilentlyAccepted() const;
-  bool IsMouseLockRequested() const;
+  bool IsMouseLockedSilently() const;
 
   void RequestToLockMouse(content::WebContents* web_contents,
                           bool user_gesture,
                           bool last_unlocked_by_target);
 
   // Override from ExclusiveAccessControllerBase
   bool HandleUserPressedEscape() override;
 
   void ExitExclusiveAccessToPreviousState() override;
-  bool OnAcceptExclusiveAccessPermission() override;
-  bool OnDenyExclusiveAccessPermission() override;
 
   // Called by Browser::LostMouseLock.
   void LostMouseLock();
 
   void UnlockMouse();
 
   // If true, does not call into the WebContents to lock the mouse. Just assumes
   // that it works. This may be necessary when calling
   // Browser::RequestToLockMouse in tests, because the proper signal will not
   // have been passed to the RenderViewHost.
   void set_fake_mouse_lock_for_test(bool value) {
     fake_mouse_lock_for_test_ = value;
   }
 
  private:
   enum MouseLockState {
-    MOUSELOCK_NOT_REQUESTED,
-    // The page requests to lock the mouse and the user hasn't responded to the
-    // request.
-    MOUSELOCK_REQUESTED,
-    // Mouse lock has been allowed by the user.
-    MOUSELOCK_ACCEPTED,
-    // Mouse lock has been silently accepted, no notification to user.
-    MOUSELOCK_ACCEPTED_SILENTLY
+    MOUSELOCK_UNLOCKED,
+    // Mouse has been locked.
+    MOUSELOCK_LOCKED,
+    // Mouse has been locked silently, with no notification to user.
+    MOUSELOCK_LOCKED_SILENTLY
   };
 
   void NotifyMouseLockChange();
 
   void ExitExclusiveAccessIfNecessary() override;
   void NotifyTabExclusiveAccessLost() override;
   void RecordBubbleReshowsHistogram(int bubble_reshow_count) override;
 
-  ContentSetting GetMouseLockSetting(const GURL& url) const;
-
   MouseLockState mouse_lock_state_;
 
   bool fake_mouse_lock_for_test_;
 
   DISALLOW_COPY_AND_ASSIGN(MouseLockController);
 };
 
 #endif  //  CHROME_BROWSER_UI_EXCLUSIVE_ACCESS_MOUSE_LOCK_CONTROLLER_H_