Move even more from WmShell to Shell

ash/common/wm/window_cycle_list.cc

Index: ash/common/wm/window_cycle_list.cc
diff --git a/ash/common/wm/window_cycle_list.cc b/ash/common/wm/window_cycle_list.cc
index 5fad4f2aa9bbf25bbc3a1c6c5753b9cba916aa23..9f9a11040249391c0b76331aa0e6b3c2d6a0297b 100644
--- a/ash/common/wm/window_cycle_list.cc
+++ b/ash/common/wm/window_cycle_list.cc
@@ -384,7 +384,7 @@ WindowCycleList::WindowCycleList(const WindowList& windows)
     : windows_(windows),
       screen_observer_(this) {
   if (!ShouldShowUi())
-    WmShell::Get()->mru_window_tracker()->SetIgnoreActivations(true);
+    Shell::Get()->mru_window_tracker()->SetIgnoreActivations(true);
 
   for (WmWindow* window : windows_)
     window->aura_window()->AddObserver(this);
@@ -401,7 +401,7 @@ WindowCycleList::WindowCycleList(const WindowList& windows)
 
 WindowCycleList::~WindowCycleList() {
   if (!ShouldShowUi())
-    WmShell::Get()->mru_window_tracker()->SetIgnoreActivations(false);
+    Shell::Get()->mru_window_tracker()->SetIgnoreActivations(false);
 
   for (WmWindow* window : windows_)
     window->aura_window()->RemoveObserver(this);