Reland "Propagate information about how ARC apps are launched"

chrome/browser/ui/ash/launcher/launcher_controller_helper.cc

Index: chrome/browser/ui/ash/launcher/launcher_controller_helper.cc
diff --git a/chrome/browser/ui/ash/launcher/launcher_controller_helper.cc b/chrome/browser/ui/ash/launcher/launcher_controller_helper.cc
index 4edc3b52e059862a803109a3a96b407ca5e37db3..481db177854cafd8229aa0355aeed6c3d88b8407 100644
--- a/chrome/browser/ui/ash/launcher/launcher_controller_helper.cc
+++ b/chrome/browser/ui/ash/launcher/launcher_controller_helper.cc
@@ -171,7 +171,7 @@ void LauncherControllerHelper::LaunchApp(const std::string& app_id,
                                          int event_flags) {
   const ArcAppListPrefs* arc_prefs = GetArcAppListPrefs();
   if (arc_prefs && arc_prefs->IsRegistered(app_id)) {
-    arc::LaunchApp(profile_, app_id);
+    arc::LaunchApp(profile_, app_id, event_flags);
     return;
   }