Bootstrapping: Reboot on enrollment failure

components/pairing/host_pairing_controller.h

Index: components/pairing/host_pairing_controller.h
diff --git a/components/pairing/host_pairing_controller.h b/components/pairing/host_pairing_controller.h
index 869f1e9fa4a36704790a5d69acc11d143d5a6497..76fdd66e7466bb735437e463a6ce04eef48d3a19 100644
--- a/components/pairing/host_pairing_controller.h
+++ b/components/pairing/host_pairing_controller.h
@@ -72,6 +72,10 @@ class HostPairingController {
     // Called when the controller has provided an |auth_token| for enrollment.
     virtual void EnrollHostRequested(const std::string& auth_token) {}
 
+    // Called when the controller has sent a reboot request. This will happen
+    // when the host enrollment fails.
+    virtual void RebootHostRequested() {}
+
    private:
     DISALLOW_COPY_AND_ASSIGN(Observer);
   };