arc: Add support of default and OEM apps.

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

Index: chrome/browser/ui/ash/launcher/chrome_launcher_controller_impl.cc
diff --git a/chrome/browser/ui/ash/launcher/chrome_launcher_controller_impl.cc b/chrome/browser/ui/ash/launcher/chrome_launcher_controller_impl.cc
index 5eaee8fdf60c61d4d1b4ce6f51700dfdd90f9dc0..f04551be022b5764891dd3c7827597d16858d3ca 100644
--- a/chrome/browser/ui/ash/launcher/chrome_launcher_controller_impl.cc
+++ b/chrome/browser/ui/ash/launcher/chrome_launcher_controller_impl.cc
@@ -189,7 +189,7 @@ void ChromeLauncherControllerUserSwitchObserver::AddUser(Profile* profile) {
 ChromeLauncherControllerImpl::ChromeLauncherControllerImpl(
     Profile* profile,
     ash::ShelfModel* model)
-    : model_(model), profile_(profile) {
+    : model_(model), profile_(profile), weak_ptr_factory_(this) {
   DCHECK(model_);
   if (!profile_) {
     // If no profile was passed, we take the currently active profile and use it
@@ -1180,7 +1180,7 @@ void ChromeLauncherControllerImpl::ScheduleUpdateAppLaunchersFromPref() {
   base::ThreadTaskRunnerHandle::Get()->PostTask(
       FROM_HERE,
       base::Bind(&ChromeLauncherControllerImpl::UpdateAppLaunchersFromPref,
-                 base::Unretained(this)));
+                 weak_ptr_factory_.GetWeakPtr()));
 }
 
 void ChromeLauncherControllerImpl::UpdateAppLaunchersFromPref() {