Disable ProfileKeyedServices on import process by default.

chrome/browser/extensions/extension_system_factory.cc

Index: chrome/browser/extensions/extension_system_factory.cc
diff --git a/chrome/browser/extensions/extension_system_factory.cc b/chrome/browser/extensions/extension_system_factory.cc
index 19b86964074071985e333ddebbf77f7662b4a424..8dd116eb4370f56630fb5095e9f8b5c5f28ea71d 100644
--- a/chrome/browser/extensions/extension_system_factory.cc
+++ b/chrome/browser/extensions/extension_system_factory.cc
@@ -50,6 +50,10 @@ bool ExtensionSystemSharedFactory::ServiceRedirectedInIncognito() const {
   return true;
 }
 
+bool ExtensionSystemSharedFactory::ServiceIsNULLOnImportProcess() const {
+  return false;
+}
+
 // ExtensionSystemFactory
 
 // static
@@ -82,6 +86,10 @@ bool ExtensionSystemFactory::ServiceHasOwnInstanceInIncognito() const {
   return true;
 }
 
+bool ExtensionSystemFactory::ServiceIsNULLOnImportProcess() const {
+  return false;

[Elliot Glaysher, 2013/03/07 20:45:48]

The extension system depends on a lot of stuff, and IIUC, this will implicitly
create those services.

+}
+
 bool ExtensionSystemFactory::ServiceIsCreatedWithProfile() const {
   return true;
 }