Replace scoped_ptr with std::unique_ptr in //ui

ui/views/cocoa/cocoa_mouse_capture.h

Index: ui/views/cocoa/cocoa_mouse_capture.h
diff --git a/ui/views/cocoa/cocoa_mouse_capture.h b/ui/views/cocoa/cocoa_mouse_capture.h
index 55f87ede81c3050df0340a40644b65db4aa9da7a..247caa4e82caa1200f224959b48fdb826bf5e9db 100644
--- a/ui/views/cocoa/cocoa_mouse_capture.h
+++ b/ui/views/cocoa/cocoa_mouse_capture.h
@@ -5,8 +5,9 @@
 #ifndef UI_VIEWS_COCOA_COCOA_MOUSE_CAPTURE_H_
 #define UI_VIEWS_COCOA_COCOA_MOUSE_CAPTURE_H_
 
+#include <memory>
+
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "ui/views/views_export.h"
 
 namespace views {
@@ -36,7 +37,7 @@ class VIEWS_EXPORT CocoaMouseCapture {
 
   // The active event tap for this capture. Owned by this, but can be cleared
   // out early if another instance of CocoaMouseCapture is created.
-  scoped_ptr<ActiveEventTap> active_handle_;
+  std::unique_ptr<ActiveEventTap> active_handle_;
 
   DISALLOW_COPY_AND_ASSIGN(CocoaMouseCapture);
 };