Integrate InstanceID with GCM crypto provider

components/gcm_driver/gcm_driver.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/gcm_driver/gcm_driver.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 
@@ skipping 246 matching lines @@
 
   // Ask the handlers whether they know how to handle it.
   for (iter = app_handlers_.begin(); iter != app_handlers_.end(); ++iter) {
     if (iter->second->CanHandle(app_id))
       return iter->second;
   }
 
   return &default_app_handler_;
 }
 
+GCMEncryptionProvider* GCMDriver::GetEncryptionProviderInternal() {
+  return &encryption_provider_;
+}
+
 bool GCMDriver::HasRegisterCallback(const std::string& app_id) {
   return register_callbacks_.find(app_id) != register_callbacks_.end();
 }
 
 void GCMDriver::ClearCallbacks() {
   register_callbacks_.clear();
   unregister_callbacks_.clear();
   send_callbacks_.clear();
 }
 
@@ skipping 35 matching lines @@
     GCMClient::Result result) {
   // Invoke the original unregister callback.
   unregister_callback.Run(result);
 
   // Trigger the pending registration.
   DCHECK(register_callbacks_.find(app_id) != register_callbacks_.end());
   RegisterImpl(app_id, normalized_sender_ids);
 }
 
 }  // namespace gcm