Settings reset prompt: Fix crash when fetching default settings.

chrome/browser/safe_browsing/settings_reset_prompt/settings_reset_prompt_model.cc

Index: chrome/browser/safe_browsing/settings_reset_prompt/settings_reset_prompt_model.cc
diff --git a/chrome/browser/safe_browsing/settings_reset_prompt/settings_reset_prompt_model.cc b/chrome/browser/safe_browsing/settings_reset_prompt/settings_reset_prompt_model.cc
index dbac8e3dac65b0b136404ab98611cdc457a0dbef..f93e81e6cb54a1115ffcfbc35e4faaf84fc7f79e 100644
--- a/chrome/browser/safe_browsing/settings_reset_prompt/settings_reset_prompt_model.cc
+++ b/chrome/browser/safe_browsing/settings_reset_prompt/settings_reset_prompt_model.cc
@@ -136,7 +136,13 @@ void DefaultSettingsFetcher::OnSettingsFetched() {
   DCHECK(config_fetcher_);
   DCHECK(!config_fetcher_->IsActive());
 
-  PostCallbackAndDeleteSelf(config_fetcher_->GetSettings());
+  std::unique_ptr<BrandcodedDefaultSettings> settings(
+      config_fetcher_->GetSettings());
+  // Use default settings if fetching of BrandcodedDefaultSettings fails.
+  if (!settings)
+    settings.reset(new BrandcodedDefaultSettings());
+
+  PostCallbackAndDeleteSelf(std::move(settings));
 }
 
 void DefaultSettingsFetcher::PostCallbackAndDeleteSelf(