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

chrome/browser/extensions/extension_service.h

Index: chrome/browser/extensions/extension_service.h
===================================================================
--- chrome/browser/extensions/extension_service.h	(revision 271835)
+++ chrome/browser/extensions/extension_service.h	(working copy)
@@ -549,11 +549,6 @@
   // Used only by test code.
   void UnloadAllExtensionsInternal();
 
-  // Disable apps & extensions now to stop them from running after a profile
-  // has been conceptually deleted. Don't wait for full browser shutdown and
-  // the actual profile objects to be destroyed.
-  void OnProfileDestructionStarted();
-
   // The normal profile associated with this ExtensionService.
   Profile* profile_;