Ensure settings returned from Content Settings providers are valid

components/content_settings/core/browser/content_settings_pref.cc

Index: components/content_settings/core/browser/content_settings_pref.cc
diff --git a/components/content_settings/core/browser/content_settings_pref.cc b/components/content_settings/core/browser/content_settings_pref.cc
index d1bf46e76870dada2ee05345f854880287831167..310750215d810514a8fbdb1ea1ef2091c8a979db 100644
--- a/components/content_settings/core/browser/content_settings_pref.cc
+++ b/components/content_settings/core/browser/content_settings_pref.cc
@@ -281,6 +281,7 @@ void ContentSettingsPref::ReadContentSettingsFromPref() {
           DCHECK(is_integer);
           DCHECK_NE(CONTENT_SETTING_DEFAULT, setting);
           std::unique_ptr<base::Value> setting_ptr(new base::Value(setting));
+          DCHECK(IsValueAllowedForType(setting_ptr.get(), content_type_));
           // Per resource settings store a single timestamps for all resources.
           value_map_.SetValue(pattern_pair.first, pattern_pair.second,
                               content_type_, resource_identifier, last_modified,