Implement a dbus client for CupsTool.

chromeos/dbus/fake_debug_daemon_client.h

Index: chromeos/dbus/fake_debug_daemon_client.h
diff --git a/chromeos/dbus/fake_debug_daemon_client.h b/chromeos/dbus/fake_debug_daemon_client.h
index c475b972d27b2e21555f1a7c6fd9824c65282768..d008880ce4e74dccc6a772d4a0200457efbd8921 100644
--- a/chromeos/dbus/fake_debug_daemon_client.h
+++ b/chromeos/dbus/fake_debug_daemon_client.h
@@ -9,6 +9,7 @@
 #include <sys/types.h>
 
 #include <map>
+#include <set>
 #include <string>
 #include <vector>
 
@@ -71,6 +72,15 @@ class CHROMEOS_EXPORT FakeDebugDaemonClient : public DebugDaemonClient {
       const WaitForServiceToBeAvailableCallback& callback) override;
   void SetOomScoreAdj(const std::map<pid_t, int32_t>& pid_to_oom_score_adj,
                       const SetOomScoreAdjCallback& callback) override;
+  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) override;
+  void CupsRemovePrinter(const std::string& name,
+                         const CupsRemovePrinterCallback& callback,
+                         const base::Closure& error_callback) override;
 
   // Sets debugging features mask for testing.
   virtual void SetDebuggingFeaturesStatus(int featues_mask);
@@ -85,6 +95,7 @@ class CHROMEOS_EXPORT FakeDebugDaemonClient : public DebugDaemonClient {
   bool service_is_available_;
   std::vector<WaitForServiceToBeAvailableCallback>
       pending_wait_for_service_to_be_available_callbacks_;
+  std::set<std::string> printers_;
 
   DISALLOW_COPY_AND_ASSIGN(FakeDebugDaemonClient);
 };