Hookup the PpdProvider in the printer setup flow.

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

Index: chrome/browser/ui/webui/settings/chromeos/cups_printers_handler.h
diff --git a/chrome/browser/ui/webui/settings/chromeos/cups_printers_handler.h b/chrome/browser/ui/webui/settings/chromeos/cups_printers_handler.h
index b959644da24312905d2c88e1580972f2667b67bd..7125bf86eea25446d57ec3a9338331b8de62fab1 100644
--- a/chrome/browser/ui/webui/settings/chromeos/cups_printers_handler.h
+++ b/chrome/browser/ui/webui/settings/chromeos/cups_printers_handler.h
@@ -88,6 +88,20 @@ class CupsPrintersHandler : public ::settings::SettingsPageUIHandler,
   void OnPrintersFound(const std::vector<Printer>& printers) override;
   void OnDiscoveryDone() override;
 
+  // Invokes debugd to add the printer to CUPS.  If |ipp_everywhere| is true,
+  // automatic configuration will be attempted  and |ppd_path| is ignored.
+  // |ppd_path| is the path to a Postscript Printer Description file that will
+  // be used to configure the printer capabilities.  This file must be in
+  // Downloads or teh PPD Cache.

[Carlson, 2016/12/05 23:40:11]

the

[skau, 2016/12/06 20:55:46]

Done.

+  void AddPrinterToCups(std::unique_ptr<Printer> printer,
+                        const std::string& ppd_path,
+                        bool ipp_everywhere);
+
+  // Callback for PpdProvider::ResolveCallback.
+  void OnPPDResolved(std::unique_ptr<Printer> printer,
+                     printing::PpdProvider::CallbackResultCode result,
+                     base::FilePath ppd_path);
+
   std::unique_ptr<chromeos::PrinterDiscoverer> printer_discoverer_;
   std::unique_ptr<chromeos::printing::PpdProvider> ppd_provider_;