Track printer protocol usage for CUPS printers.

chromeos/printing/printer_configuration.h

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROMEOS_PRINTING_PRINTER_CONFIGURATION_H_
 #define CHROMEOS_PRINTING_PRINTER_CONFIGURATION_H_
 
 #include <memory>
 #include <string>
 
@@ skipping 29 matching lines @@
     // True if the printer should be auto-configured and a PPD is unnecessary.
     bool autoconf = false;
   };
 
   // The location where the printer is stored.
   enum Source {
     SRC_USER_PREFS,
     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();
 
   // Constructs a printer object with an |id| and a |last_updated| timestamp.
   explicit Printer(const std::string& id, const base::Time& last_updated = {});
 
   // Copy constructor and assignment.
   Printer(const Printer& printer);
   Printer& operator=(const Printer& printer);
 
@@ skipping 27 matching lines @@
   PpdReference* mutable_ppd_reference() { return &ppd_reference_; }
 
   const std::string& uuid() const { return uuid_; }
   void set_uuid(const std::string& uuid) { uuid_ = uuid; }
 
   // Returns true if the printer should be automatically configured using
   // IPP Everywhere.  Computed using information from |ppd_reference_| and
   // |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; }
 
   // Returns the timestamp for the most recent update.  Returns 0 if the
   // printer was not created with a valid timestamp.
   base::Time last_updated() const { return last_updated_; }
 
  private:
   // Globally unique identifier. Empty indicates a new printer.
   std::string id_;
@@ skipping 23 matching lines @@
   // The datastore which holds this printer.
   Source source_;
 
   // Timestamp of most recent change.
   base::Time last_updated_;
 };
 
 }  // namespace chromeos
 
 #endif  // CHROMEOS_PRINTING_PRINTER_CONFIGURATION_H_