Revert 270890 "Unload all apps / extensions immediately when del..."

extensions/common/extension.h

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef EXTENSIONS_COMMON_EXTENSION_H_
 #define EXTENSIONS_COMMON_EXTENSION_H_
 
 #include <algorithm>
 #include <iosfwd>
 #include <map>
@@ skipping 504 matching lines @@
   std::string old_name;
 
   InstalledExtensionInfo(const Extension* extension,
                          bool is_update,
                          const std::string& old_name);
 };
 
 struct UnloadedExtensionInfo {
   // TODO(DHNishi): Move this enum to ExtensionRegistryObserver.
   enum Reason {
-    REASON_UNDEFINED,         // Undefined state used to initialize variables.
-    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_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 reason;
 
   // The extension being unloaded - this should always be non-NULL.
   const Extension* extension;
 
   UnloadedExtensionInfo(const Extension* extension, Reason reason);
 };
 
@@ skipping 16 matching lines @@
 
   UpdatedExtensionPermissionsInfo(
       const Extension* extension,
       const PermissionSet* permissions,
       Reason reason);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_COMMON_EXTENSION_H_