Add a callback parameter to UpdateClient::SendUninstallPing.

components/component_updater/component_updater_service_unittest.cc

Index: components/component_updater/component_updater_service_unittest.cc
diff --git a/components/component_updater/component_updater_service_unittest.cc b/components/component_updater/component_updater_service_unittest.cc
index c4e6199e88d70171893216fd78f6c4e93c3ad7c3..d833d200a1d77716558c837e0219598906c0eff1 100644
--- a/components/component_updater/component_updater_service_unittest.cc
+++ b/components/component_updater/component_updater_service_unittest.cc
@@ -75,9 +75,11 @@ class MockUpdateClient : public UpdateClient {
                      bool(const std::string& id, CrxUpdateItem* update_item));
   MOCK_CONST_METHOD1(IsUpdating, bool(const std::string& id));
   MOCK_METHOD0(Stop, void());
-  MOCK_METHOD3(
-      SendUninstallPing,
-      void(const std::string& id, const base::Version& version, int reason));
+  MOCK_METHOD4(SendUninstallPing,
+               void(const std::string& id,
+                    const base::Version& version,
+                    int reason,
+                    const Callback& callback));
 
  private:
   ~MockUpdateClient() override;