[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 a1eeff6bd12b0118a392627c227f0b1f3ed57194..e46c503bfe03f45d7bbc370e78d8fe3e956bf34e 100644
--- a/google_apis/gcm/engine/gcm_store_impl.h
+++ b/google_apis/gcm/engine/gcm_store_impl.h
@@ -77,6 +77,12 @@ 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;