Remove implicit conversion from scoped_refptr to T*

BUG=404334

Review URL: https://codereview.chromium.org/522053002

Cr-Commit-Position: refs/heads/master@{#292757}

chrome/common/extensions/permissions/permission_set_unittest.cc

@@ -879,7 +879,7 @@ TEST(PermissionsTest, SuppressedPermissionMessages) {
         api_permissions, ManifestPermissionSet(), hosts, URLPatternSet()));
     PermissionMessages messages =
         PermissionMessageProvider::Get()->GetPermissionMessages(
-            permissions, Manifest::TYPE_EXTENSION);
+            permissions.get(), Manifest::TYPE_EXTENSION);
     EXPECT_EQ(1u, messages.size());
     EXPECT_EQ(PermissionMessage::kHostsAll, messages[0].id());
   }