Add notification and observer to copy the file between other users.

chrome/browser/chromeos/extensions/file_manager/event_router.cc

Index: chrome/browser/chromeos/extensions/file_manager/event_router.cc
diff --git a/chrome/browser/chromeos/extensions/file_manager/event_router.cc b/chrome/browser/chromeos/extensions/file_manager/event_router.cc
index 9d8613c329d3b245c347e4bfd86b5169beb19531..97fe727e845c036d2d3d17c51cd70e4dcf595d89 100644
--- a/chrome/browser/chromeos/extensions/file_manager/event_router.cc
+++ b/chrome/browser/chromeos/extensions/file_manager/event_router.cc
@@ -269,6 +269,22 @@ std::string FileErrorToErrorName(base::File::Error error_code) {
   }
 }
 
+void GrantAccessForAddedProfileToRunningInstance(Profile* added_profile,
+                                                 Profile* running_profile) {
+  extensions::ProcessManager* const process_manager =
+      extensions::ExtensionSystem::Get(running_profile)->process_manager();
+  if (!process_manager)
+    return;
+
+  extensions::ExtensionHost* const extension_host =
+      process_manager->GetBackgroundHostForExtension(kFileManagerAppId);
+  if (!extension_host || !extension_host->render_process_host())
+    return;
+
+  const int id = extension_host->render_process_host()->GetID();
+  file_manager::util::SetupProfileFileAccessPermissions(id, added_profile);
+}
+
 // Checks if we should send a progress event or not according to the
 // |last_time| of sending an event. If |always| is true, the function always
 // returns true. If the function returns true, the function also updates
@@ -464,6 +480,10 @@ void EventRouter::ObserveEvents() {
   pref_change_registrar_->Add(prefs::kDisableDriveHostedFiles, callback);
   pref_change_registrar_->Add(prefs::kDisableDrive, callback);
   pref_change_registrar_->Add(prefs::kUse24HourClock, callback);
+
+  notification_registrar_.Add(this,
+                              chrome::NOTIFICATION_PROFILE_ADDED,
+                              content::NotificationService::AllSources());
 }
 
 // File watch setup routines.
@@ -936,4 +956,18 @@ void EventRouter::OnFormatCompleted(const std::string& device_path,
   // Do nothing.
 }
 
+void EventRouter::Observe(int type,
+                          const content::NotificationSource& source,
+                          const content::NotificationDetails& details) {
+  if (type == chrome::NOTIFICATION_PROFILE_ADDED) {
+    Profile* const added_profile = content::Source<Profile>(source).ptr();
+    if (!added_profile->IsOffTheRecord())
+      GrantAccessForAddedProfileToRunningInstance(added_profile, profile_);
+
+    BroadcastEvent(profile_,
+                   file_browser_private::OnProfileAdded::kEventName,

[fukino, 2014/09/11 05:00:16]

I think there is no listener for onProfileAdded event, so only
GrantAccessForAddedProfileToRunningInstance(added_profile, profile_) looks
necessary.
Could you confirm this, and remove this BroadcastEvent() and onProfileAdded in
idl file if possible?

[iseki, 2014/09/11 05:15:52]

It can be removed.

+                   file_browser_private::OnProfileAdded::Create());
+  }
+}
+
 }  // namespace file_manager