Prevent DisplayPreferences from saving incorrect rotations.

ash/system/audio/tray_audio.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/audio/tray_audio.h"
 
 #include <cmath>
 
 #include "ash/ash_constants.h"
 #include "ash/display/display_manager.h"
@@ skipping 149 matching lines @@
 }
 
 void TrayAudio::ChangeInternalSpeakerChannelMode() {
   // Swap left/right channel only if it is in Yoga mode.
   system::TrayAudioDelegate::AudioChannelMode channel_mode =
       system::TrayAudioDelegate::NORMAL;
   if (gfx::Display::InternalDisplayId() != gfx::Display::kInvalidDisplayID) {
     const DisplayInfo& display_info =
         Shell::GetInstance()->display_manager()->GetDisplayInfo(
             gfx::Display::InternalDisplayId());
-    if (display_info.rotation() == gfx::Display::ROTATE_180)
+    if (display_info.Rotation(gfx::Display::ROTATION_SOURCE_ACTIVE) ==
+        gfx::Display::ROTATE_180) {
       channel_mode = system::TrayAudioDelegate::LEFT_RIGHT_SWAPPED;
+    }
   }
 
   audio_delegate_->SetInternalSpeakerChannelMode(channel_mode);
 }
 
 void TrayAudio::Update() {
   if (tray_view())
       tray_view()->SetVisible(GetInitialVisibility());
   if (volume_view_) {
     volume_view_->SetVolumeLevel(
         static_cast<float>(audio_delegate_->GetOutputVolumeLevel()) / 100.0f);
     volume_view_->Update();
   }
 }
 
 }  // namespace ash