Remove linked_ptr usage in //base.

extensions/browser/guest_view/web_view/web_view_permission_helper.cc

Index: extensions/browser/guest_view/web_view/web_view_permission_helper.cc
diff --git a/extensions/browser/guest_view/web_view/web_view_permission_helper.cc b/extensions/browser/guest_view/web_view/web_view_permission_helper.cc
index d8c78067445b5baa858e58f2eea1c8c9b15d55c8..3ce5dd9e62eb3e2e1f3b1f499826c7cdc678e352 100644
--- a/extensions/browser/guest_view/web_view/web_view_permission_helper.cc
+++ b/extensions/browser/guest_view/web_view/web_view_permission_helper.cc
@@ -334,20 +334,20 @@ int WebViewPermissionHelper::RequestPermission(
   args->SetInteger(webview::kRequestId, request_id);
   switch (permission_type) {
     case WEB_VIEW_PERMISSION_TYPE_NEW_WINDOW: {
-      web_view_guest_->DispatchEventToView(
-          new GuestViewEvent(webview::kEventNewWindow, std::move(args)));
+      web_view_guest_->DispatchEventToView(make_scoped_ptr(
+          new GuestViewEvent(webview::kEventNewWindow, std::move(args))));
       break;
     }
     case WEB_VIEW_PERMISSION_TYPE_JAVASCRIPT_DIALOG: {
-      web_view_guest_->DispatchEventToView(
-          new GuestViewEvent(webview::kEventDialog, std::move(args)));
+      web_view_guest_->DispatchEventToView(make_scoped_ptr(
+          new GuestViewEvent(webview::kEventDialog, std::move(args))));
       break;
     }
     default: {
       args->SetString(webview::kPermission,
                       PermissionTypeToString(permission_type));
-      web_view_guest_->DispatchEventToView(new GuestViewEvent(
-          webview::kEventPermissionRequest, std::move(args)));
+      web_view_guest_->DispatchEventToView(make_scoped_ptr(new GuestViewEvent(
+          webview::kEventPermissionRequest, std::move(args))));
       break;
     }
   }