chromeos: Refactor ash SystemTrayDelegate enterprise methods to mojo

chrome/browser/ui/ash/system_tray_client.h

Index: chrome/browser/ui/ash/system_tray_client.h
diff --git a/chrome/browser/ui/ash/system_tray_client.h b/chrome/browser/ui/ash/system_tray_client.h
index 7a429d4e03e864f05e607f45ac3ae81d9def7846..06908c66f79c0f96f7b44b20fc35c430435fbb4c 100644
--- a/chrome/browser/ui/ash/system_tray_client.h
+++ b/chrome/browser/ui/ash/system_tray_client.h
@@ -8,6 +8,7 @@
 #include "ash/public/interfaces/system_tray.mojom.h"
 #include "base/macros.h"
 #include "chrome/browser/chromeos/system/system_clock_observer.h"
+#include "components/policy/core/common/cloud/cloud_policy_store.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "mojo/public/cpp/bindings/binding.h"
@@ -26,6 +27,7 @@ class WidgetDelegate;
 // TODO: Consider renaming this to SystemTrayClientChromeOS.
 class SystemTrayClient : public ash::mojom::SystemTrayClient,
                          public chromeos::system::SystemClockObserver,
+                         public policy::CloudPolicyStore::Observer,
                          public content::NotificationObserver {
  public:
   SystemTrayClient();
@@ -73,6 +75,7 @@ class SystemTrayClient : public ash::mojom::SystemTrayClient,
   void ShowPaletteHelp() override;
   void ShowPaletteSettings() override;
   void ShowPublicAccountInfo() override;
+  void ShowEnterpriseInfo() override;
   void ShowNetworkConfigure(const std::string& network_id) override;
   void ShowNetworkCreate(const std::string& type) override;
   void ShowThirdPartyVpnCreate(const std::string& extension_id) override;
@@ -88,6 +91,12 @@ class SystemTrayClient : public ash::mojom::SystemTrayClient,
   // chromeos::system::SystemClockObserver:
   void OnSystemClockChanged(chromeos::system::SystemClock* clock) override;
 
+  // policy::CloudPolicyStore::Observer
+  void OnStoreLoaded(policy::CloudPolicyStore* store) override;
+  void OnStoreError(policy::CloudPolicyStore* store) override;
+
+  void UpdateEnterpriseDomain();
+
   // content::NotificationObserver:
   void Observe(int type,
                const content::NotificationSource& source,
@@ -102,6 +111,11 @@ class SystemTrayClient : public ash::mojom::SystemTrayClient,
   // Whether an Adobe Flash component update is available.
   bool flash_update_available_ = false;
 
+  // Avoid sending ash an empty enterprise domain at startup and suppress
+  // duplicate IPCs during the session.
+  std::string last_enterprise_domain_;
+  bool last_active_directory_managed_ = false;
+
   content::NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(SystemTrayClient);