Dispatch push event to worker from PushServiceImpl#OnMessage.

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 <algorithm>
 
 #include "base/logging.h"
 #include "components/gcm_driver/gcm_app_handler.h"
@@ skipping 140 matching lines @@
   DCHECK_EQ(app_handlers_.count(app_id), 0u);
   app_handlers_[app_id] = handler;
 }
 
 void GCMDriver::RemoveAppHandler(const std::string& app_id) {
   DCHECK(!app_id.empty());
   app_handlers_.erase(app_id);
 }
 
 GCMAppHandler* GCMDriver::GetAppHandler(const std::string& app_id) {
+  LOG(WARNING) << "app_id: " << app_id;
   // Look for exact match.
   GCMAppHandlerMap::const_iterator iter = app_handlers_.find(app_id);
   if (iter != app_handlers_.end())
     return iter->second;
 
   // 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;
   }
@@ skipping 10 matching lines @@
   unregister_callbacks_.clear();
   send_callbacks_.clear();
 }
 
 bool GCMDriver::IsAsyncOperationPending(const std::string& app_id) const {
   return register_callbacks_.find(app_id) != register_callbacks_.end() ||
          unregister_callbacks_.find(app_id) != unregister_callbacks_.end();
 }
 
 }  // namespace gcm