chromeos: Refactor ash SystemTrayDelegate enterprise methods to mojo

ash/system/tray/system_tray_controller.h

Index: ash/system/tray/system_tray_controller.h
diff --git a/ash/system/tray/system_tray_controller.h b/ash/system/tray/system_tray_controller.h
index ab29f2038328435d1964426df2c65aba451074a2..74e5268a057711aa054d3e016919c15d76cc604f 100644
--- a/ash/system/tray/system_tray_controller.h
+++ b/ash/system/tray/system_tray_controller.h
@@ -30,6 +30,8 @@ class ASH_EXPORT SystemTrayController
   ~SystemTrayController() override;
 
   base::HourClockType hour_clock_type() const { return hour_clock_type_; }
+  const std::string& enterprise_domain() const { return enterprise_domain_; }
+  bool active_directory_managed() const { return active_directory_managed_; }
 
   // Wrappers around the mojom::SystemTrayClient interface.
   void ShowSettings();
@@ -50,6 +52,7 @@ class ASH_EXPORT SystemTrayController
   void ShowPaletteHelp();
   void ShowPaletteSettings();
   void ShowPublicAccountInfo();
+  void ShowEnterpriseInfo();
   void ShowNetworkConfigure(const std::string& network_id);
   void ShowNetworkCreate(const std::string& type);
   void ShowThirdPartyVpnCreate(const std::string& extension_id);
@@ -66,6 +69,8 @@ class ASH_EXPORT SystemTrayController
   void SetPrimaryTrayEnabled(bool enabled) override;
   void SetPrimaryTrayVisible(bool visible) override;
   void SetUse24HourClock(bool use_24_hour) override;
+  void SetEnterpriseDomain(const std::string& enterprise_domain,
+                           bool active_directory_managed) override;
   void ShowUpdateIcon(mojom::UpdateSeverity severity,
                       bool factory_reset_required,
                       mojom::UpdateType update_type) override;
@@ -80,6 +85,13 @@ class ASH_EXPORT SystemTrayController
   // The type of clock hour display: 12 or 24 hour.
   base::HourClockType hour_clock_type_;
 
+  // The domain name of the organization that manages the device. Empty if the
+  // device is not enterprise enrolled or if it uses Active Directory.
+  std::string enterprise_domain_;
+
+  // Whether this is an Active Directory managed enterprise device.
+  bool active_directory_managed_ = false;
+
   DISALLOW_COPY_AND_ASSIGN(SystemTrayController);
 };