Added confirmation for printer registration.

cloud_print/gcp20/prototype/printer.h

Index: cloud_print/gcp20/prototype/printer.h
diff --git a/cloud_print/gcp20/prototype/printer.h b/cloud_print/gcp20/prototype/printer.h
index 1a23f24ad3d233da313bcd616d85f7e212eb121d..c225d80f85375a51f4ca0f72f9e677bf78d5dc37 100644
--- a/cloud_print/gcp20/prototype/printer.h
+++ b/cloud_print/gcp20/prototype/printer.h
@@ -13,7 +13,7 @@
 #include "cloud_print/gcp20/prototype/privet_http_server.h"
 #include "cloud_print/gcp20/prototype/x_privet_token.h"
 
-extern const char* kPrinterStatePath;
+extern const char kPrinterStatePath[];
 
 // This class maintain work of DNS-SD server, HTTP server and others.
 class Printer : public PrivetHttpServer::Delegate,
@@ -37,7 +37,7 @@ class Printer : public PrivetHttpServer::Delegate,
  private:
   struct RegistrationInfo {
     enum RegistrationState {
-      DEV_REG_UNREGISTERED = 0,
+      DEV_REG_UNREGISTERED,
       DEV_REG_REGISTRATION_STARTED,
       DEV_REG_REGISTRATION_CLAIM_TOKEN_READY,
       DEV_REG_REGISTRATION_COMPLETING,
@@ -45,6 +45,13 @@ class Printer : public PrivetHttpServer::Delegate,
       DEV_REG_REGISTERED,
     };
 
+    enum ConfirmationState {
+      CONFIRMATION_PENDING,
+      CONFIRMATION_CONFIRMED,
+      CONFIRMATION_DISCARDED,
+      CONFIRMATION_TIMEOUT,
+    };
+
     RegistrationInfo();
     ~RegistrationInfo();
 
@@ -52,6 +59,7 @@ class Printer : public PrivetHttpServer::Delegate,
     std::string refresh_token;
     std::string device_id;
     RegistrationState state;
+    ConfirmationState confirmation_state;
 
     std::string registration_token;
     std::string complete_invite_url;
@@ -102,15 +110,22 @@ class Printer : public PrivetHttpServer::Delegate,
   // Generates ProxyId for this device.
   std::string GenerateProxyId() const;
 
+  // Checks if confirmation was received.
+  void WaitUserConfirmation(base::Time valid_until);
+
   // Creates data for DNS TXT respond.
   std::vector<std::string> CreateTxt() const;
 
-  RegistrationInfo reg_info_;
-
   // Saving and loading registration info from file.
   void SaveToFile(const std::string& filename) const;
   bool LoadFromFile(const std::string& filename);
 
+  // Converts errors.
+  PrivetHttpServer::RegistrationErrorStatus ConfirmationToRegistrationError(
+      RegistrationInfo::ConfirmationState state);
+
+  RegistrationInfo reg_info_;
+
   // Contains DNS-SD server.
   DnsSdServer dns_server_;