Only activate radio buttons in ContentSettingsBubble for valid content settings. This prevents fail…

chrome/browser/ui/content_settings/content_setting_bubble_model.cc

Index: chrome/browser/ui/content_settings/content_setting_bubble_model.cc
diff --git a/chrome/browser/ui/content_settings/content_setting_bubble_model.cc b/chrome/browser/ui/content_settings/content_setting_bubble_model.cc
index 421b6e0cd2912cddad178074c8590fca0d60beb8..339ea888ccb36438e5132f0d7009c21ad6ca7482 100644
--- a/chrome/browser/ui/content_settings/content_setting_bubble_model.cc
+++ b/chrome/browser/ui/content_settings/content_setting_bubble_model.cc
@@ -401,7 +401,12 @@ void ContentSettingSingleRadioGroup::SetRadioGroup() {
       setting == CONTENT_SETTING_BLOCK &&
       PluginUtils::ShouldPreferHtmlOverPlugins(
           HostContentSettingsMapFactory::GetForProfile(profile()));
-  set_radio_group_enabled(setting_source == SETTING_SOURCE_USER &&
+
+  const auto* map = HostContentSettingsMapFactory::GetForProfile(profile());
+  // Prevent creation of content settings for illegal urls like about:blank
+  bool is_valid = map->CanSetNarrowestContentSetting(url, url, content_type());
+
+  set_radio_group_enabled(is_valid && setting_source == SETTING_SOURCE_USER &&
                           !flash_hidden_from_plugin_list);
 
   selected_item_ = radio_group.default_item;