Push API: Validate storage before returning cached subscriptions

components/gcm_driver/gcm_driver_desktop.h

Index: components/gcm_driver/gcm_driver_desktop.h
diff --git a/components/gcm_driver/gcm_driver_desktop.h b/components/gcm_driver/gcm_driver_desktop.h
index cdd0ac79a685c8064adf84eb63b25a56367ee674..c7568035d4152bb1c6a5a84162f95084fc57655a 100644
--- a/components/gcm_driver/gcm_driver_desktop.h
+++ b/components/gcm_driver/gcm_driver_desktop.h
@@ -58,6 +58,11 @@ class GCMDriverDesktop : public GCMDriver,
   ~GCMDriverDesktop() override;
 
   // GCMDriver implementation:
+  void ValidateRegistration(
+      const std::string& app_id,
+      const std::vector<std::string>& sender_ids,
+      const std::string& registration_id,
+      const ValidateRegistrationCallback& callback) override;
   void Shutdown() override;
   void OnSignedIn() override;
   void OnSignedOut() override;
@@ -111,6 +116,11 @@ class GCMDriverDesktop : public GCMDriver,
                 const std::string& scope,
                 const std::map<std::string, std::string>& options,
                 const GetTokenCallback& callback) override;
+  void ValidateToken(const std::string& app_id,
+                     const std::string& authorized_entity,
+                     const std::string& scope,
+                     const std::string& token,
+                     const ValidateTokenCallback& callback) override;
   void DeleteToken(const std::string& app_id,
                    const std::string& authorized_entity,
                    const std::string& scope,
@@ -130,6 +140,11 @@ class GCMDriverDesktop : public GCMDriver,
     bool operator()(const TokenTuple& a, const TokenTuple& b) const;
   };
 
+  void DoValidateRegistration(
+      std::unique_ptr<RegistrationInfo> registration_info,
+      const std::string& registration_id,
+      const ValidateRegistrationCallback& callback);
+
   //  Stops the GCM service. It can be restarted by calling EnsureStarted again.
   void Stop();