Unload all apps / extensions when deleting a profile.

extensions/common/extension.h

Index: extensions/common/extension.h
diff --git a/extensions/common/extension.h b/extensions/common/extension.h
index 3354fa625c2a170096a871cc86cb70c285e6b5fd..33f69348d7ecd952560fd75b58f93a564cff6910 100644
--- a/extensions/common/extension.h
+++ b/extensions/common/extension.h
@@ -513,11 +513,12 @@ struct InstalledExtensionInfo {
 struct UnloadedExtensionInfo {
   // TODO(DHNishi): Move this enum to ExtensionRegistryObserver.
   enum Reason {
-    REASON_DISABLE,    // Extension is being disabled.
-    REASON_UPDATE,     // Extension is being updated to a newer version.
-    REASON_UNINSTALL,  // Extension is being uninstalled.
-    REASON_TERMINATE,  // Extension has terminated.
-    REASON_BLACKLIST,  // Extension has been blacklisted.
+    REASON_DISABLE,           // Extension is being disabled.
+    REASON_UPDATE,            // Extension is being updated to a newer version.
+    REASON_UNINSTALL,         // Extension is being uninstalled.
+    REASON_TERMINATE,         // Extension has terminated.
+    REASON_BLACKLIST,         // Extension has been blacklisted.
+    REASON_PROFILE_SHUTDOWN,  // Profile is being shut down.
   };
 
   Reason reason;