Replace c/b/nss_context by a KeyedService.

chrome/browser/profiles/chrome_browser_main_extra_parts_profiles.cc

Index: chrome/browser/profiles/chrome_browser_main_extra_parts_profiles.cc
diff --git a/chrome/browser/profiles/chrome_browser_main_extra_parts_profiles.cc b/chrome/browser/profiles/chrome_browser_main_extra_parts_profiles.cc
index ecf2633ba098b6f2d1717b1abe9064951580bfa7..fc7d1b230568479aa5e691e497e570c8d52b009b 100644
--- a/chrome/browser/profiles/chrome_browser_main_extra_parts_profiles.cc
+++ b/chrome/browser/profiles/chrome_browser_main_extra_parts_profiles.cc
@@ -98,6 +98,10 @@
 #include "chrome/browser/ui/gesture_prefs_observer_factory_aura.h"
 #endif
 
+#if defined(USE_NSS)
+#include "chrome/browser/net/cert_database_service_factory.h"
+#endif
+
 #if defined(OS_ANDROID)
 #include "chrome/browser/media/protected_media_identifier_permission_context_factory.h"
 #else
@@ -264,6 +268,10 @@ EnsureBrowserContextKeyedServiceFactoriesBuilt() {
   ThemeServiceFactory::GetInstance();
 #endif
   WebDataServiceFactory::GetInstance();
+
+#if defined(USE_NSS)
+  cert_database::CertDatabaseServiceFactory::GetInstance();
+#endif
 }
 
 void ChromeBrowserMainExtraPartsProfiles::PreProfileInit() {