Skeleton GCMAppHandler for Push API

components/gcm_driver/gcm_driver.h

Index: components/gcm_driver/gcm_driver.h
diff --git a/components/gcm_driver/gcm_driver.h b/components/gcm_driver/gcm_driver.h
index e2fe882532c28d68fd2494c96387cebb949af421..59b0226066beca561bb3967d4c4dc037df75f348 100644
--- a/components/gcm_driver/gcm_driver.h
+++ b/components/gcm_driver/gcm_driver.h
@@ -34,6 +34,9 @@ class GCMDriver {
   GCMDriver();
   virtual ~GCMDriver();
 
+  void SetLazyLoadAppHandlersClosure(
+      const base::Closure& lazy_load_app_handlers);
+
   // Registers |sender_id| for an app. A registration ID will be returned by
   // the GCM server.
   // |app_id|: application ID.
@@ -157,6 +160,10 @@ class GCMDriver {
   // The default handler when no app handler can be found in the map.
   DefaultGCMAppHandler default_app_handler_;
 
+  // Called before the first time GetAppHandler is run, to allow consumers
+  // to register app handlers on demand.

[fgorski, 2014/06/10 17:09:28]

Please explain that scenario a bit better in response. I am not sure I follow.

[johnme, 2014/06/10 20:33:48]

Replied out of band by email.

+  base::Closure lazy_load_app_handlers_;
+
   DISALLOW_COPY_AND_ASSIGN(GCMDriver);
 };