[Athena] Hotfix for IME component extension loading crash on sign in

chrome/browser/chromeos/input_method/component_extension_ime_manager_impl.cc

Index: chrome/browser/chromeos/input_method/component_extension_ime_manager_impl.cc
diff --git a/chrome/browser/chromeos/input_method/component_extension_ime_manager_impl.cc b/chrome/browser/chromeos/input_method/component_extension_ime_manager_impl.cc
index 3be6ec72b6b48eb0758358a1ffc9cc48b117a995..e69567b9d06c36607b66bc27e4a4d468e1638a34 100644
--- a/chrome/browser/chromeos/input_method/component_extension_ime_manager_impl.cc
+++ b/chrome/browser/chromeos/input_method/component_extension_ime_manager_impl.cc
@@ -254,6 +254,13 @@ void DoLoadExtension(Profile* profile,
   extensions::ExtensionSystem* extension_system =
       extensions::ExtensionSystem::Get(profile);
   ExtensionService* extension_service = extension_system->extension_service();
+#if defined(USE_ATHENA)
+  // ExtensionService is not properly initialized for Athena yet.
+  // http://crbug.com/426787
+  if (!extension_service)
+    return;
+#endif
+  DCHECK(extension_service);
   if (extension_service->GetExtensionById(extension_id, false))
     return;
   const std::string loaded_extension_id =