Convert //components/mus from scoped_ptr to std::unique_ptr

components/mus/ws/focus_controller.h

Index: components/mus/ws/focus_controller.h
diff --git a/components/mus/ws/focus_controller.h b/components/mus/ws/focus_controller.h
index 1dea308aa01f2a577da5454aacab87a08e8c6679..96a08609ad0c318c4695f5e6591c1d60eded15c4 100644
--- a/components/mus/ws/focus_controller.h
+++ b/components/mus/ws/focus_controller.h
@@ -5,8 +5,9 @@
 #ifndef COMPONENTS_MUS_WS_FOCUS_CONTROLLER_H_
 #define COMPONENTS_MUS_WS_FOCUS_CONTROLLER_H_
 
+#include <memory>
+
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/observer_list.h"
 #include "components/mus/ws/server_window_drawn_tracker_observer.h"
 #include "components/mus/ws/server_window_tracker.h"
@@ -86,12 +87,12 @@ class FocusController : public ServerWindowDrawnTrackerObserver {
   // Keeps track of the list of windows that have already been visited during a
   // window cycle. This is only active when |activation_reason_| is set to
   // CYCLE.
-  scoped_ptr<ServerWindowTracker> cycle_windows_;
+  std::unique_ptr<ServerWindowTracker> cycle_windows_;
 
   base::ObserverList<FocusControllerObserver> observers_;
 
   // Keeps track of the visibility of the focused and active window.
-  scoped_ptr<ServerWindowDrawnTracker> drawn_tracker_;
+  std::unique_ptr<ServerWindowDrawnTracker> drawn_tracker_;
 
   DISALLOW_COPY_AND_ASSIGN(FocusController);
 };