Lazily build the app list model.

chrome/browser/ui/views/app_list/linux/app_list_service_linux.cc

Index: chrome/browser/ui/views/app_list/linux/app_list_service_linux.cc
diff --git a/chrome/browser/ui/views/app_list/linux/app_list_service_linux.cc b/chrome/browser/ui/views/app_list/linux/app_list_service_linux.cc
index 7eeea309de5d55336ac245b9876514cbd799a16e..a3ba8ac20a6233d5029cdde21e262bce07fe0b1a 100644
--- a/chrome/browser/ui/views/app_list/linux/app_list_service_linux.cc
+++ b/chrome/browser/ui/views/app_list/linux/app_list_service_linux.cc
@@ -97,6 +97,6 @@ AppListService* AppListService::Get(chrome::HostDesktopType desktop_type) {
 // static
 void AppListService::InitAll(Profile* initial_profile,
                              const base::FilePath& profile_path) {
-  AppListServiceAsh::GetInstance()->Init(initial_profile);
   AppListServiceLinux::GetInstance()->Init(initial_profile);

[calamity, 2015/03/10 06:18:51]

This is necessary to fix a test. There's some weird jazz happening in
AppListServiceImpl::OnProfileWillBeRemoved().

It uses local state as storage for the current app list profile but there are 2
AppListServiceImpls that exist at once. AppListServiceAsh and
AppListServicePlatform both change the local state and whoever gets the
notification second doesn't set their view delegate's profile to NULL.

[tapted, 2015/03/10 19:19:54]

What's the test? (e.g. how do you know it's not a "real" problem?). And will
windows have this problem as well?

Note that on Windows the ash instance is only initialized when metro mode is
running.

[calamity, 2015/03/12 21:23:22]

It is a 'real' problem. I guess I should fix it before I land this. I think
AppListServiceAsh just shouldn't be changing local_state_ for that case. The
test is AppListServiceImplTest.DeletingProfileUpdatesViewDelegate. Why is the
AppListServiceAsh always created for linux? Seems weird.

[tapted, 2015/03/20 11:47:15]

I think for a while there was an `Open Ash` option from the Hotdog menu, which
didn't trigger a restart. Whereas on Windows, to get to Ash you need to restart
chrome (so Ash is only sometimes-initialized).

+  AppListServiceAsh::GetInstance()->Init(initial_profile);
 }