Add a callback parameter to UpdateClient::SendUninstallPing.

extensions/browser/updater/update_service_unittest.cc

Index: extensions/browser/updater/update_service_unittest.cc
diff --git a/extensions/browser/updater/update_service_unittest.cc b/extensions/browser/updater/update_service_unittest.cc
index 3c0390950787d7822c8611fc43be598741f0be2c..d75329cb365b50a9fd08e7f09f7ed6ee49186920 100644
--- a/extensions/browser/updater/update_service_unittest.cc
+++ b/extensions/browser/updater/update_service_unittest.cc
@@ -65,7 +65,8 @@ class FakeUpdateClient : public update_client::UpdateClient {
   void Stop() override {}
   void SendUninstallPing(const std::string& id,
                          const base::Version& version,
-                         int reason) override {
+                         int reason,
+                         const update_client::Callback& callback) override {
     uninstall_pings_.emplace_back(id, version, reason);
   }