Use EventGsonProvider from Gerrit core

The event structure changed in master. Use the Gerrit serializer
instead of the event broker one.

Bug: Issue 14425
Change-Id: I18e81548474e3ab218fbae3ac26f57dfb71b46b7
diff --git a/src/main/java/com/googlesource/gerrit/plugins/kinesis/Module.java b/src/main/java/com/googlesource/gerrit/plugins/kinesis/Module.java
index 2629fe7..23a8a1d 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/kinesis/Module.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/kinesis/Module.java
@@ -18,13 +18,13 @@
 
 import com.amazonaws.services.kinesis.producer.KinesisProducer;
 import com.gerritforge.gerrit.eventbroker.BrokerApi;
-import com.gerritforge.gerrit.eventbroker.EventGsonProvider;
 import com.gerritforge.gerrit.eventbroker.TopicSubscriber;
 import com.google.common.collect.Sets;
 import com.google.gerrit.extensions.events.LifecycleListener;
 import com.google.gerrit.extensions.registration.DynamicItem;
 import com.google.gerrit.extensions.registration.DynamicSet;
 import com.google.gerrit.lifecycle.LifecycleModule;
+import com.google.gerrit.server.events.EventGsonProvider;
 import com.google.gerrit.server.events.EventListener;
 import com.google.gson.Gson;
 import com.google.inject.Inject;