Update PpdProvider threading model.

chrome/browser/ui/webui/settings/chromeos/cups_printers_handler.cc

Index: chrome/browser/ui/webui/settings/chromeos/cups_printers_handler.cc
diff --git a/chrome/browser/ui/webui/settings/chromeos/cups_printers_handler.cc b/chrome/browser/ui/webui/settings/chromeos/cups_printers_handler.cc
index fb7ebb240c5b863c6ebccd761107c89ad7883f50..3f783c505a614c9fd4a7b141b89634d08ee33a6a 100644
--- a/chrome/browser/ui/webui/settings/chromeos/cups_printers_handler.cc
+++ b/chrome/browser/ui/webui/settings/chromeos/cups_printers_handler.cc
@@ -83,6 +83,9 @@ CupsPrintersHandler::CupsPrintersHandler(content::WebUI* webui)
       base::PathService::Get(chrome::DIR_CHROMEOS_PPD_CACHE, &ppd_cache_path));
   ppd_provider_ = chromeos::printing::PpdProvider::Create(
       google_apis::GetAPIKey(), g_browser_process->system_request_context(),
+      content::BrowserThread::GetTaskRunnerForThread(
+          content::BrowserThread::FILE)
+          .get(),

[skau, 2016/11/09 00:01:09]

Why are you using the raw pointer instead of the smart pointer?

[Carlson, 2016/11/10 19:22:50]

Changed to scoped_refptr (see other comment)

       chromeos::printing::PpdCache::Create(ppd_cache_path));
 }