Delete unused code for exclusive access permission prompting.

chrome/browser/ui/exclusive_access/mouse_lock_controller.h

Index: chrome/browser/ui/exclusive_access/mouse_lock_controller.h
diff --git a/chrome/browser/ui/exclusive_access/mouse_lock_controller.h b/chrome/browser/ui/exclusive_access/mouse_lock_controller.h
index 9a3bd463f075d8be7ce2d51a588c2cf3b3286c72..3e3b9f20884eb3285d4486f5b89d4726847dcaee 100644
--- a/chrome/browser/ui/exclusive_access/mouse_lock_controller.h
+++ b/chrome/browser/ui/exclusive_access/mouse_lock_controller.h
@@ -16,8 +16,7 @@ class MouseLockController : public ExclusiveAccessControllerBase {
   ~MouseLockController() override;
 
   bool IsMouseLocked() const;
-  bool IsMouseLockSilentlyAccepted() const;
-  bool IsMouseLockRequested() const;
+  bool IsMouseLockedSilently() const;
 
   void RequestToLockMouse(content::WebContents* web_contents,
                           bool user_gesture,
@@ -27,8 +26,6 @@ class MouseLockController : public ExclusiveAccessControllerBase {
   bool HandleUserPressedEscape() override;
 
   void ExitExclusiveAccessToPreviousState() override;
-  bool OnAcceptExclusiveAccessPermission() override;
-  bool OnDenyExclusiveAccessPermission() override;
 
   // Called by Browser::LostMouseLock.
   void LostMouseLock();
@@ -45,14 +42,11 @@ class MouseLockController : public ExclusiveAccessControllerBase {
 
  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();
@@ -61,8 +55,6 @@ class MouseLockController : public ExclusiveAccessControllerBase {
   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_;