Promotes a handful of members from WmShell to Shell

components/exo/wm_helper_ash.cc

Index: components/exo/wm_helper_ash.cc
diff --git a/components/exo/wm_helper_ash.cc b/components/exo/wm_helper_ash.cc
index a54f8ce565a9355212b49c702b627d40f2603d96..6c3051171f82af2791fe953123bd270ce32fd137 100644
--- a/components/exo/wm_helper_ash.cc
+++ b/components/exo/wm_helper_ash.cc
@@ -98,13 +98,14 @@ bool WMHelperAsh::IsMaximizeModeWindowManagerEnabled() const {
 }
 
 bool WMHelperAsh::IsSpokenFeedbackEnabled() const {
-  return ash::WmShell::Get()
+  return ash::Shell::GetInstance()
       ->accessibility_delegate()
       ->IsSpokenFeedbackEnabled();
 }
 
 void WMHelperAsh::PlayEarcon(int sound_key) const {
-  return ash::WmShell::Get()->accessibility_delegate()->PlayEarcon(sound_key);
+  return ash::Shell::GetInstance()->accessibility_delegate()->PlayEarcon(
+      sound_key);
 }
 
 void WMHelperAsh::OnWindowActivated(