Push API: Fix unsubscribing from GCM on Android

components/gcm_driver/gcm_driver_desktop.cc

Index: components/gcm_driver/gcm_driver_desktop.cc
diff --git a/components/gcm_driver/gcm_driver_desktop.cc b/components/gcm_driver/gcm_driver_desktop.cc
index 6a9153986819f84471c5c6d49f7df3d8c5201986..4d32c37153c906c555eded6d51b38251842bf3af 100644
--- a/components/gcm_driver/gcm_driver_desktop.cc
+++ b/components/gcm_driver/gcm_driver_desktop.cc
@@ -522,7 +522,8 @@ void GCMDriverDesktop::DoRegister(const std::string& app_id,
                  sender_ids));
 }
 
-void GCMDriverDesktop::UnregisterImpl(const std::string& app_id) {
+void GCMDriverDesktop::UnregisterImpl(const std::string& app_id,
+                                      const std::vector<std::string>& unused) {

[jianli, 2015/02/12 20:03:31]

Probably it is a bit better to write this as
  const std::vector<std::string>& /*sender_ids*/

[johnme, 2015/02/13 19:11:56]

Done.

   // Delay the unregister operation until GCMClient is ready.
   if (!delayed_task_controller_->CanRunTaskWithoutDelay()) {
     delayed_task_controller_->AddTask(