cros: Move TrayBluetoothHelper out of chrome into ash

ash/common/system/tray/system_tray_controller.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ash/common/system/tray/system_tray_controller.h"
 
 #include "ash/common/system/tray/system_tray.h"
 #include "ash/common/system/tray/system_tray_notifier.h"
 #include "ash/common/system/update/tray_update.h"
 #include "ash/common/wm_shell.h"
@@ skipping 10 matching lines @@
 void SystemTrayController::ShowSettings() {
   if (system_tray_client_)
     system_tray_client_->ShowSettings();
 }
 
 void SystemTrayController::ShowBluetoothSettings() {
   if (system_tray_client_)
     system_tray_client_->ShowBluetoothSettings();
 }
 
+void SystemTrayController::ShowBluetoothPairingDialog(
+    const std::string& address,
+    const base::string16& name_for_display,
+    bool paired,
+    bool connected) {
+  if (system_tray_client_) {
+    system_tray_client_->ShowBluetoothPairingDialog(address, name_for_display,
+                                                    paired, connected);
+  }
+}
+
 void SystemTrayController::ShowDateSettings() {
   if (system_tray_client_)
     system_tray_client_->ShowDateSettings();
 }
 
 void SystemTrayController::ShowSetTimeDialog() {
   if (system_tray_client_)
     system_tray_client_->ShowSetTimeDialog();
 }
 
@@ skipping 136 matching lines @@
   for (WmWindow* root : WmShell::Get()->GetAllRootWindows()) {
     ash::SystemTray* tray = root->GetRootWindowController()->GetSystemTray();
     // External monitors might not have a tray yet.
     if (!tray)
       continue;
     tray->tray_update()->ShowUpdateIcon(severity, factory_reset_required);
   }
 }
 
 }  // namespace ash