Convert //chrome/browser/chromeos from scoped_ptr to std::unique_ptr

chrome/browser/chromeos/net/network_portal_notification_controller.h

Index: chrome/browser/chromeos/net/network_portal_notification_controller.h
diff --git a/chrome/browser/chromeos/net/network_portal_notification_controller.h b/chrome/browser/chromeos/net/network_portal_notification_controller.h
index e2dd8f912224410830d2918e8beb79b4860642b1..0995b3aed17bc7a2085ac15629674f786fae6f98 100644
--- a/chrome/browser/chromeos/net/network_portal_notification_controller.h
+++ b/chrome/browser/chromeos/net/network_portal_notification_controller.h
@@ -95,7 +95,7 @@ class NetworkPortalNotificationController
   // Creates the default notification informing the user that a captive portal
   // has been detected. On click the captive portal login page is opened in the
   // browser.
-  scoped_ptr<message_center::Notification>
+  std::unique_ptr<message_center::Notification>
   CreateDefaultCaptivePortalNotification(const NetworkState* network);
 
   // Creates an advanced captive portal notification informing the user that a
@@ -103,7 +103,7 @@ class NetworkPortalNotificationController
   // captive portal authentication for that network. Gives the user the choice
   // to either authenticate using that extension or open the captive portal
   // login page in the browser.
-  scoped_ptr<message_center::Notification>
+  std::unique_ptr<message_center::Notification>
   CreateCaptivePortalNotificationForExtension(
       const NetworkState* network,
       extensions::NetworkingConfigService* networking_config_service,
@@ -111,7 +111,7 @@ class NetworkPortalNotificationController
 
   // Constructs a notification to inform the user that a captive portal has been
   // detected.
-  scoped_ptr<message_center::Notification> GetNotification(
+  std::unique_ptr<message_center::Notification> GetNotification(
       const NetworkState* network,
       const NetworkPortalDetector::CaptivePortalState& state);