Integrate InstanceID with GCM crypto provider

components/gcm_driver/instance_id/instance_id_driver.cc

Index: components/gcm_driver/instance_id/instance_id_driver.cc
diff --git a/components/gcm_driver/instance_id/instance_id_driver.cc b/components/gcm_driver/instance_id/instance_id_driver.cc
index 1e3ee9e79edb703c0e03c6baa1b08dc2784ad3a6..3cd96b70091ec8e1a8da4c828ab11d99754eca16 100644
--- a/components/gcm_driver/instance_id/instance_id_driver.cc
+++ b/components/gcm_driver/instance_id/instance_id_driver.cc
@@ -37,9 +37,8 @@ InstanceID* InstanceIDDriver::GetInstanceID(const std::string& app_id) {
   if (iter != instance_id_map_.end())
     return iter->second.get();
 
-  gcm::InstanceIDHandler* handler = gcm_driver_->GetInstanceIDHandlerInternal();
-
-  std::unique_ptr<InstanceID> instance_id = InstanceID::Create(app_id, handler);
+  std::unique_ptr<InstanceID> instance_id =
+      InstanceID::Create(app_id, gcm_driver_);
   InstanceID* instance_id_ptr = instance_id.get();
   instance_id_map_.insert(std::make_pair(app_id, std::move(instance_id)));
   return instance_id_ptr;