Cleanup: Constify some ProfileKeyedBaseFactory methods and all overrides. Remove ProfileKeyedBaseFa…

chrome/browser/history/history_service_factory.cc

Index: chrome/browser/history/history_service_factory.cc
===================================================================
--- chrome/browser/history/history_service_factory.cc	(revision 154876)
+++ chrome/browser/history/history_service_factory.cc	(working copy)
@@ -74,10 +74,10 @@
   return history_service;
 }
 
-bool HistoryServiceFactory::ServiceRedirectedInIncognito() {
+bool HistoryServiceFactory::ServiceRedirectedInIncognito() const {
   return true;
 }
 
-bool HistoryServiceFactory::ServiceIsNULLWhileTesting() {
+bool HistoryServiceFactory::ServiceIsNULLWhileTesting() const {
   return true;
 }