Move even more from WmShell to Shell

ash/common/accelerators/accelerator_commands.cc

Index: ash/common/accelerators/accelerator_commands.cc
diff --git a/ash/common/accelerators/accelerator_commands.cc b/ash/common/accelerators/accelerator_commands.cc
index 3fe7d171049f4883c033501f72c00eb0528f2634..a5f05acaa07436a61132c93e84126a007011c0e1 100644
--- a/ash/common/accelerators/accelerator_commands.cc
+++ b/ash/common/accelerators/accelerator_commands.cc
@@ -9,6 +9,7 @@
 #include "ash/common/wm/wm_event.h"
 #include "ash/common/wm_shell.h"
 #include "ash/common/wm_window.h"
+#include "ash/shell.h"
 #include "base/metrics/user_metrics.h"
 
 namespace ash {
@@ -20,7 +21,7 @@ bool ToggleMinimized() {
   // the launcher when there is no active window.
   if (!window) {
     MruWindowTracker::WindowList mru_windows(
-        WmShell::Get()->mru_window_tracker()->BuildMruWindowList());
+        Shell::Get()->mru_window_tracker()->BuildMruWindowList());
     if (!mru_windows.empty())
       mru_windows.front()->GetWindowState()->Activate();
     return true;