Track printer protocol usage for CUPS printers.

chromeos/printing/printer_configuration.h

Index: chromeos/printing/printer_configuration.h
diff --git a/chromeos/printing/printer_configuration.h b/chromeos/printing/printer_configuration.h
index 6b9bd641acf4b95cfc62e6b3cd4644a0dbcddde8..18d72bc934f0249ac82a47e0a7461a338f532e62 100644
--- a/chromeos/printing/printer_configuration.h
+++ b/chromeos/printing/printer_configuration.h
@@ -47,6 +47,20 @@ class CHROMEOS_EXPORT Printer {
     SRC_POLICY,
   };
 
+  // An enumeration of printer protocols.  Do not change these values as they
+  // are used in enums.xml.
+  enum PrinterProtocol {
+    kUnknown = 0,
+    kUsb = 1,
+    kIpp = 2,
+    kIpps = 3,
+    kHttp = 4,
+    kHttps = 5,
+    kSocket = 6,
+    kLpd = 7,
+    kProtocolMax
+  };
+
   // Constructs a printer object that is completely empty.
   Printer();
 
@@ -94,6 +108,9 @@ class CHROMEOS_EXPORT Printer {
   // |uri_|.
   bool IsIppEverywhere() const;
 
+  // Returns the printer protocol the printer is configured with.
+  Printer::PrinterProtocol GetProtocol() const;
+
   Source source() const { return source_; }
   void set_source(const Source source) { source_ = source; }