Implements an UpdateClient::SendUninstallPing API for the

components/update_client/update_client_internal.h

Index: components/update_client/update_client_internal.h
diff --git a/components/update_client/update_client_internal.h b/components/update_client/update_client_internal.h
index 6a5bf39b7cc0053a97c983900323aecdee98a93b..6df2b99dd02aafe03c085350a7e52d920a83ae75 100644
--- a/components/update_client/update_client_internal.h
+++ b/components/update_client/update_client_internal.h
@@ -53,6 +53,9 @@ class UpdateClientImpl : public UpdateClient {
                          CrxUpdateItem* update_item) const override;
   bool IsUpdating(const std::string& id) const override;
   void Stop() override;
+  void SendUninstallPing(const std::string& id,
+                         const Version& version,
+                         int reason) override;
 
  private:
   ~UpdateClientImpl() override;