Replace scoped_ptr with std::unique_ptr in //ui

ui/keyboard/content/keyboard_ui_content.h

Index: ui/keyboard/content/keyboard_ui_content.h
diff --git a/ui/keyboard/content/keyboard_ui_content.h b/ui/keyboard/content/keyboard_ui_content.h
index 909c8bcd33a1cdb3567d7df7f018c5f6681e6c66..29c8a110ba7a5ec9c60e22e65a56372001930614 100644
--- a/ui/keyboard/content/keyboard_ui_content.h
+++ b/ui/keyboard/content/keyboard_ui_content.h
@@ -5,8 +5,9 @@
 #ifndef UI_KEYBOARD_CONTENT_KEYBOARD_UI_CONTENT_H_
 #define UI_KEYBOARD_CONTENT_KEYBOARD_UI_CONTENT_H_
 
+#include <memory>
+
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "content/public/common/media_stream_request.h"
 #include "ui/aura/window_observer.h"
 #include "ui/base/ime/text_input_type.h"
@@ -118,10 +119,10 @@ class KEYBOARD_EXPORT KeyboardUIContent : public KeyboardUI,
 
   const GURL default_url_;
 
-  scoped_ptr<content::WebContents> keyboard_contents_;
-  scoped_ptr<wm::Shadow> shadow_;
+  std::unique_ptr<content::WebContents> keyboard_contents_;
+  std::unique_ptr<wm::Shadow> shadow_;
 
-  scoped_ptr<WindowBoundsChangeObserver> window_bounds_observer_;
+  std::unique_ptr<WindowBoundsChangeObserver> window_bounds_observer_;
 
   DISALLOW_COPY_AND_ASSIGN(KeyboardUIContent);
 };