Notify GCMAppHandlers when the store is reset, so they clear cached IDs

components/invalidation/impl/gcm_invalidation_bridge.cc

Index: components/invalidation/impl/gcm_invalidation_bridge.cc
diff --git a/components/invalidation/impl/gcm_invalidation_bridge.cc b/components/invalidation/impl/gcm_invalidation_bridge.cc
index 09aca1e3991a2ec7e6b8a5ab57de62f236d9a7b1..0d641712ef7655303dc332b18fbb8f7cecdc8707 100644
--- a/components/invalidation/impl/gcm_invalidation_bridge.cc
+++ b/components/invalidation/impl/gcm_invalidation_bridge.cc
@@ -319,6 +319,11 @@ void GCMInvalidationBridge::ShutdownHandler() {
   // Nothing to do.
 }
 
+void GCMInvalidationBridge::OnStoreReset() {
+  // Nothing to do here since CacheInvalidation doesn't locally persist
+  // registration ID, instead it just re-registers on every startup.

[Peter Beverloo, 2016/11/03 17:28:57]

What about GCMNetworkChannel::registration_id_?

[johnme, 2016/11/08 19:22:41]

Done - this was a little more involved, as I had to add a method to the delegate
interface.

+}
+
 void GCMInvalidationBridge::OnMessage(const std::string& app_id,
                                       const gcm::IncomingMessage& message) {
   gcm::MessageData::const_iterator it;