Migrate simple ash Shell metrics users.

ash/system/chromeos/audio/tray_audio_chromeos.cc

 // Copyright 2014 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/system/chromeos/audio/tray_audio_chromeos.h"
 
 #include "ash/common/system/audio/volume_view.h"
-#include "ash/metrics/user_metrics_recorder.h"
-#include "ash/shell.h"
+#include "ash/common/wm_shell.h"
 #include "ash/system/chromeos/audio/audio_detailed_view.h"
 #include "ash/system/chromeos/audio/tray_audio_delegate_chromeos.h"
 #include "chromeos/dbus/dbus_thread_manager.h"
 #include "ui/views/view.h"
 
 namespace ash {
 
 using system::TrayAudioDelegate;
 using system::TrayAudioDelegateChromeOs;
 
@@ skipping 16 matching lines @@
 
   if (audio_detail_view_)
     audio_detail_view_->Update();
 }
 
 views::View* TrayAudioChromeOs::CreateDetailedView(LoginStatus status) {
   if (pop_up_volume_view_) {
     volume_view_ = new tray::VolumeView(this, audio_delegate_.get(), false);
     return volume_view_;
   } else {
-    Shell::GetInstance()->metrics()->RecordUserMetricsAction(
-        ash::UMA_STATUS_AREA_DETAILED_AUDIO_VIEW);
+    WmShell::Get()->RecordUserMetricsAction(
+        UMA_STATUS_AREA_DETAILED_AUDIO_VIEW);
     audio_detail_view_ = new tray::AudioDetailedView(this);
     return audio_detail_view_;
   }
 }
 
 void TrayAudioChromeOs::DestroyDetailedView() {
   if (audio_detail_view_) {
     audio_detail_view_ = NULL;
   } else if (volume_view_) {
     volume_view_ = NULL;
@@ skipping 28 matching lines @@
 }
 
 void TrayAudioChromeOs::SuspendDone(const base::TimeDelta& sleep_duration) {
   // This event is triggered when the device resumes after earlier suspension,
   // we should always start or re-start HDMI re-discovering
   // grace period right after this event.
   audio_delegate_->SetActiveHDMIOutoutRediscoveringIfNecessary(true);
 }
 
 }  // namespace ash