Revert of Converts chrome to aura-mus

chrome/browser/ui/views/chrome_browser_main_extra_parts_views.h

Index: chrome/browser/ui/views/chrome_browser_main_extra_parts_views.h
diff --git a/chrome/browser/ui/views/chrome_browser_main_extra_parts_views.h b/chrome/browser/ui/views/chrome_browser_main_extra_parts_views.h
index 32665d8235f52b15598f1300110768df18cf4035..195f7996f5e9de0be96a92300fc160967c97186e 100644
--- a/chrome/browser/ui/views/chrome_browser_main_extra_parts_views.h
+++ b/chrome/browser/ui/views/chrome_browser_main_extra_parts_views.h
@@ -16,12 +16,10 @@
 
 namespace views {
 class ViewsDelegate;
+class WindowManagerConnection;
 }
 
 #if defined(USE_AURA)
-namespace views {
-class MusClient;
-}
 namespace wm {
 class WMState;
 }
@@ -31,10 +29,6 @@
  public:
   ChromeBrowserMainExtraPartsViews();
   ~ChromeBrowserMainExtraPartsViews() override;
-
-#if defined(USE_AURA)
-  wm::WMState* wm_state() { return wm_state_.get(); }
-#endif
 
   // Overridden from ChromeBrowserMainExtraParts:
   void ToolkitInitialized() override;
@@ -48,7 +42,7 @@
 
 #if defined(USE_AURA)
   std::unique_ptr<wm::WMState> wm_state_;
-  std::unique_ptr<views::MusClient> mus_client_;
+  std::unique_ptr<views::WindowManagerConnection> window_manager_connection_;
 
   // Subscribes to updates about input-devices.
   std::unique_ptr<ui::InputDeviceClient> input_device_client_;