Revert of chromeos: Remove SystemTrayDelegate::GetIMEManagedMessage()

ash/system/ime/tray_ime_chromeos.cc

Index: ash/system/ime/tray_ime_chromeos.cc
diff --git a/ash/system/ime/tray_ime_chromeos.cc b/ash/system/ime/tray_ime_chromeos.cc
index 85165a6752453521867557783ca8cb29d94ec4aa..0b3d22c1b64120f5b11ca101b46186af5d4b06e9 100644
--- a/ash/system/ime/tray_ime_chromeos.cc
+++ b/ash/system/ime/tray_ime_chromeos.cc
@@ -26,10 +26,8 @@
 #include "ash/system/tray_accessibility.h"
 #include "base/logging.h"
 #include "base/strings/utf_string_conversions.h"
-#include "components/strings/grit/components_strings.h"
 #include "ui/accessibility/ax_enums.h"
 #include "ui/accessibility/ax_node_data.h"
-#include "ui/base/ime/chromeos/input_method_manager.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/gfx/font.h"
 #include "ui/gfx/image/image.h"
@@ -39,8 +37,6 @@
 #include "ui/views/controls/label.h"
 #include "ui/views/layout/box_layout.h"
 #include "ui/views/widget/widget.h"
-
-using chromeos::input_method::InputMethodManager;
 
 namespace ash {
 namespace tray {
@@ -274,11 +270,7 @@
   delegate->GetCurrentIME(&current_ime_);
   delegate->GetAvailableIMEList(&ime_list_);
   delegate->GetCurrentIMEProperties(&property_list_);
-  auto ime_state = InputMethodManager::Get()->GetActiveIMEState();
-  ime_managed_message_ =
-      ime_state->GetAllowedInputMethods().empty()
-          ? base::string16()
-          : l10n_util::GetStringUTF16(IDS_OPTIONS_CONTROLLED_SETTING_POLICY);
+  ime_managed_message_ = delegate->GetIMEManagedMessage();
 
   Update();
 }