Start using the controller in app's view.

chrome/browser/ui/exclusive_access/mouse_lock_controller.cc

 // 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.
 
 #include "chrome/browser/ui/exclusive_access/mouse_lock_controller.h"
 
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/exclusive_access/exclusive_access_context.h"
@@ skipping 139 matching lines @@
     // Do not store preference on file:// URLs, they don't have a clean
     // origin policy.
     // TODO(estark): Revisit this when crbug.com/455882 is fixed.
     if (!url.SchemeIsFile() && pattern.IsValid()) {
       settings_map->SetContentSetting(pattern,
                                       ContentSettingsPattern::Wildcard(),
                                       CONTENT_SETTINGS_TYPE_MOUSELOCK,
                                       std::string(), CONTENT_SETTING_ALLOW);
     }
 
+    ExclusiveAccessContext* context =
+        exclusive_access_manager()->exclusive_access_context();
     WebContents* tab = exclusive_access_tab();
-    if (tab && tab->GotResponseToLockMouseRequest(true)) {
-      mouse_lock_state_ = MOUSELOCK_ACCEPTED;
+    if (context->UseCallbackForMouseLock()) {
+      if (tab && context->MouseLockCallback(true)) {
+        mouse_lock_state_ = MOUSELOCK_ACCEPTED;
+      } else {
+        mouse_lock_state_ = MOUSELOCK_NOT_REQUESTED;
+        SetTabWithExclusiveAccess(nullptr);
+      }
     } else {
-      mouse_lock_state_ = MOUSELOCK_NOT_REQUESTED;
-      SetTabWithExclusiveAccess(nullptr);
+      if (tab && tab->GotResponseToLockMouseRequest(true)) {
+        mouse_lock_state_ = MOUSELOCK_ACCEPTED;
+      } else {
+        mouse_lock_state_ = MOUSELOCK_NOT_REQUESTED;
+        SetTabWithExclusiveAccess(nullptr);
+      }
     }
     NotifyMouseLockChange();
     return true;
   }
 
   return false;
 }
 
 bool MouseLockController::OnDenyExclusiveAccessPermission() {
   WebContents* tab = exclusive_access_tab();
@@ skipping 64 matching lines @@
           ->IsPrivilegedFullscreenForTab())
     return CONTENT_SETTING_ALLOW;
 
   HostContentSettingsMap* settings_map = exclusive_access_manager()
                                              ->exclusive_access_context()
                                              ->GetProfile()
                                              ->GetHostContentSettingsMap();
   return settings_map->GetContentSetting(
       url, url, CONTENT_SETTINGS_TYPE_MOUSELOCK, std::string());
 }