Fix crash when switching to a profile that cannot be opened

chrome/browser/safe_browsing/safe_browsing_service.cc

Index: chrome/browser/safe_browsing/safe_browsing_service.cc
diff --git a/chrome/browser/safe_browsing/safe_browsing_service.cc b/chrome/browser/safe_browsing/safe_browsing_service.cc
index ce6cb4def26772497f10c0638b56e37d837d451d..a5fdb281cc2becfc7de484bc3e8fb0e0e9ccee76 100644
--- a/chrome/browser/safe_browsing/safe_browsing_service.cc
+++ b/chrome/browser/safe_browsing/safe_browsing_service.cc
@@ -642,12 +642,12 @@ void SafeBrowsingService::AddPrefService(PrefService* pref_service) {
 }
 
 void SafeBrowsingService::RemovePrefService(PrefService* pref_service) {
+  // It is possible to have RemovePrefService called without a prior call to
+  // AddPrefService if profile initialization fails.
   if (prefs_map_.find(pref_service) != prefs_map_.end()) {
     delete prefs_map_[pref_service];
     prefs_map_.erase(pref_service);
     RefreshState();
-  } else {
-    NOTREACHED();
   }
 }