Implement a dbus client for CupsTool.

chromeos/dbus/debug_daemon_client.h

Index: chromeos/dbus/debug_daemon_client.h
diff --git a/chromeos/dbus/debug_daemon_client.h b/chromeos/dbus/debug_daemon_client.h
index af32bdc4ce0617594d7178bdda8a9aef2e42a70e..2a7a3185919dd2073d07e481b22b258379f76b30 100644
--- a/chromeos/dbus/debug_daemon_client.h
+++ b/chromeos/dbus/debug_daemon_client.h
@@ -209,6 +209,33 @@ class CHROMEOS_EXPORT DebugDaemonClient
       const std::map<pid_t, int32_t>& pid_to_oom_score_adj,
       const SetOomScoreAdjCallback& callback) = 0;
 
+  // A callback to handle the result of CupsAddPrinter.
+  using CupsAddPrinterCallback = base::Callback<void(bool success)>;
+
+  // Calls CupsAddPrinter.  |name| is the printer name. |uri| is the device
+  // uri. |ppd_path| is the absolute path to the PPD file. |ipp_everywhere|
+  // is true for autoconf of IPP Everywhere printers.  |callback| is called with
+  // true if adding the printer to CUPS was successful and false if there was an
+  // error.  |error_callback| will be called if there was an error in
+  // communicating with debugd.
+  virtual void CupsAddPrinter(const std::string& name,
+                              const std::string& uri,
+                              const std::string& ppd_path,
+                              bool ipp_everywhere,
+                              const CupsAddPrinterCallback& callback,
+                              const base::Closure& error_callback) = 0;
+
+  // A callback to handle the result of CupsRemovePrinter.
+  using CupsRemovePrinterCallback = base::Callback<void(bool success)>;
+
+  // Calls CupsRemovePrinter.  |name| is the printer name as registered in
+  // CUPS.  |callback| is called with true if removing the printer from CUPS was
+  // successful and false if there was an error.  |error_callback| will be
+  // called if there was an error in communicating with debugd.
+  virtual void CupsRemovePrinter(const std::string& name,
+                                 const CupsRemovePrinterCallback& callback,
+                                 const base::Closure& error_callback) = 0;
+
   // Factory function, creates a new instance and returns ownership.
   // For normal usage, access the singleton via DBusThreadManager::Get().
   static DebugDaemonClient* Create();