[GCM] Adding basic G-services handling

google_apis/gcm/engine/gcm_store_impl.h

Index: google_apis/gcm/engine/gcm_store_impl.h
diff --git a/google_apis/gcm/engine/gcm_store_impl.h b/google_apis/gcm/engine/gcm_store_impl.h
index a08a72c624235e24789c1e9f827a437caac219f0..ebf6c57f8aa62a73a01b8653b9f4b719b1058112 100644
--- a/google_apis/gcm/engine/gcm_store_impl.h
+++ b/google_apis/gcm/engine/gcm_store_impl.h
@@ -78,6 +78,12 @@ class GCM_EXPORT GCMStoreImpl : public GCMStore {
   virtual void SetLastCheckinTime(const base::Time& last_checkin_time,
                                   const UpdateCallback& callback) OVERRIDE;
 
+  // G-service settings handling.
+  virtual void SetGServicesSettings(
+      const std::map<std::string, std::string>& settings,
+      const std::string& settings_digest,
+      const UpdateCallback& callback) OVERRIDE;
+
  private:
   typedef std::map<std::string, int> AppIdToMessageCountMap;