Revert of Converts chrome to aura-mus

chrome/browser/ui/views/frame/browser_frame_mus.h

Index: chrome/browser/ui/views/frame/browser_frame_mus.h
diff --git a/chrome/browser/ui/views/frame/browser_frame_mus.h b/chrome/browser/ui/views/frame/browser_frame_mus.h
index f6a2cb2f863ad53c7cf9ce3ce412bc8798bbdec4..58eae657f37200606bf5aebfe7ab278f7c25ef4a 100644
--- a/chrome/browser/ui/views/frame/browser_frame_mus.h
+++ b/chrome/browser/ui/views/frame/browser_frame_mus.h
@@ -7,16 +7,17 @@
 
 #include "base/macros.h"
 #include "chrome/browser/ui/views/frame/native_browser_frame.h"
-#include "ui/views/widget/desktop_aura/desktop_native_widget_aura.h"
+#include "ui/views/mus/native_widget_mus.h"
 
-class BrowserFrame;
 class BrowserView;
 
 class BrowserFrameMus : public NativeBrowserFrame,
-                        public views::DesktopNativeWidgetAura {
+                        public views::NativeWidgetMus {
  public:
   BrowserFrameMus(BrowserFrame* browser_frame, BrowserView* browser_view);
   ~BrowserFrameMus() override;
+
+  ui::Window* mus_window();
 
  private:
   // Overridden from NativeBrowserFrame:
@@ -32,7 +33,9 @@
       const content::NativeWebKeyboardEvent& event) override;
   int GetMinimizeButtonOffset() const override;
 
-  BrowserFrame* browser_frame_;
+  // Overriden from NativeWidgetMus:
+  void UpdateClientArea() override;
+
   BrowserView* browser_view_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserFrameMus);