Unload all apps / extensions when deleting a profile.

chrome/browser/profiles/profile_manager.cc

Index: chrome/browser/profiles/profile_manager.cc
diff --git a/chrome/browser/profiles/profile_manager.cc b/chrome/browser/profiles/profile_manager.cc
index 5d676690ceb8b701f9161d8bb617e8a7e0bd4895..1746f905eda9d72261dadb983e2c001924c9d24b 100644
--- a/chrome/browser/profiles/profile_manager.cc
+++ b/chrome/browser/profiles/profile_manager.cc
@@ -1073,6 +1073,13 @@ void ProfileManager::FinishDeletingProfile(const base::FilePath& profile_dir) {
   Profile* profile = GetProfileByPath(profile_dir);
 
   if (profile) {
+    // TODO: Migrate additional code in this block to observe this notification
+    // instead of being implemented here.
+    content::NotificationService::current()->Notify(
+        chrome::NOTIFICATION_PROFILE_DESTRUCTION_STARTED,
+        content::Source<Profile>(profile),
+        content::NotificationService::NoDetails());
+
     // By this point, all in-progress downloads for the profile being deleted
     // must have been canceled (crbug.com/336725).
     DCHECK(DownloadServiceFactory::GetForBrowserContext(profile)->