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

components/mus/public/cpp/input_event_handler.h

Index: components/mus/public/cpp/input_event_handler.h
diff --git a/components/mus/public/cpp/input_event_handler.h b/components/mus/public/cpp/input_event_handler.h
index d21354b2d732a937e29f32d0d88bf7467290d4e6..db0c0d0544dd7915771a6dfea4c7fbf5d8572500 100644
--- a/components/mus/public/cpp/input_event_handler.h
+++ b/components/mus/public/cpp/input_event_handler.h
@@ -5,8 +5,9 @@
 #ifndef COMPONENTS_MUS_PUBLIC_CPP_INPUT_EVENT_HANDLER_H_
 #define COMPONENTS_MUS_PUBLIC_CPP_INPUT_EVENT_HANDLER_H_
 
+#include <memory>
+
 #include "base/callback_forward.h"
-#include "base/memory/scoped_ptr.h"
 
 namespace ui {
 class Event;
@@ -30,7 +31,8 @@ class InputEventHandler {
   virtual void OnWindowInputEvent(
       Window* target,
       const ui::Event& event,
-      scoped_ptr<base::Callback<void(mojom::EventResult)>>* ack_callback) = 0;
+      std::unique_ptr<base::Callback<void(mojom::EventResult)>>*
+          ack_callback) = 0;
 
  protected:
   virtual ~InputEventHandler() {}