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

chrome/browser/push_messaging/push_messaging_service_impl.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 "chrome/browser/push_messaging/push_messaging_service_impl.h"
 
 #include <vector>
 
 #include "base/barrier_closure.h"
 #include "base/base64url.h"
@@ skipping 234 matching lines @@
   return base::StartsWith(app_id, kPushMessagingAppIdentifierPrefix,
                           base::CompareCase::INSENSITIVE_ASCII);
 }
 
 void PushMessagingServiceImpl::ShutdownHandler() {
   // Shutdown() should come before and it removes us from the list of app
   // handlers of gcm::GCMDriver so this shouldn't ever been called.
   NOTREACHED();
 }
 
+void PushMessagingServiceImpl::OnStoreReset() {
+  // Delete all cached subscriptions, since they are now invalid.
+  for (const auto& identifier : PushMessagingAppIdentifier::GetAll(profile_)) {
+    // Clear all the subscriptions in parallel, to reduce risk that shutdown
+    // occurs before we finish clearing them.
+    ClearPushSubscriptionId(profile_, identifier.origin(),
+                            identifier.service_worker_registration_id(),
+                            base::Bind(&base::DoNothing));
+    // TODO(johnme): Fire pushsubscriptionchange/pushsubscriptionlost SW event.
+  }
+  PushMessagingAppIdentifier::DeleteAllFromPrefs(profile_);
+}
+
 // OnMessage methods -----------------------------------------------------------
 
 void PushMessagingServiceImpl::OnMessage(const std::string& app_id,
                                          const gcm::IncomingMessage& message) {
   // We won't have time to process and act on the message.
   // TODO(peter) This should be checked at the level of the GCMDriver, so that
   // the message is not consumed. See https://crbug.com/612815
   if (g_browser_process->IsShuttingDown())
     return;
 
@@ skipping 694 matching lines @@
 }
 
 instance_id::InstanceIDDriver* PushMessagingServiceImpl::GetInstanceIDDriver()
     const {
   instance_id::InstanceIDProfileService* instance_id_profile_service =
       instance_id::InstanceIDProfileServiceFactory::GetForProfile(profile_);
   CHECK(instance_id_profile_service);
   CHECK(instance_id_profile_service->driver());
   return instance_id_profile_service->driver();
 }