Refactor preference syncing.

chrome/browser/net/ssl_config_service_manager_pref.cc

Index: chrome/browser/net/ssl_config_service_manager_pref.cc
diff --git a/chrome/browser/net/ssl_config_service_manager_pref.cc b/chrome/browser/net/ssl_config_service_manager_pref.cc
index 71e385bfaf52a336634cd0c2e1d57eb1aa29161c..85eadd349b9a29ea033e1bf98be76742eaf9e22d 100644
--- a/chrome/browser/net/ssl_config_service_manager_pref.cc
+++ b/chrome/browser/net/ssl_config_service_manager_pref.cc
@@ -125,15 +125,18 @@ void SSLConfigServiceManagerPref::RegisterPrefs(PrefService* prefs) {
   net::SSLConfig default_config;
   if (!prefs->FindPreference(prefs::kCertRevocationCheckingEnabled)) {
     prefs->RegisterBooleanPref(prefs::kCertRevocationCheckingEnabled,
-                               default_config.rev_checking_enabled);
+                               default_config.rev_checking_enabled,
+                               false /* don't sync pref */);
   }
   if (!prefs->FindPreference(prefs::kSSL3Enabled)) {
     prefs->RegisterBooleanPref(prefs::kSSL3Enabled,
-                               default_config.ssl3_enabled);
+                               default_config.ssl3_enabled,
+                               false /* don't sync pref */);
   }
   if (!prefs->FindPreference(prefs::kTLS1Enabled)) {
     prefs->RegisterBooleanPref(prefs::kTLS1Enabled,
-                               default_config.tls1_enabled);
+                               default_config.tls1_enabled,
+                               false /* don't sync pref */);
   }
 }