Convert //content/browser from scoped_ptr to std::unique_ptr

content/browser/web_contents/web_drag_dest_mac.h

Index: content/browser/web_contents/web_drag_dest_mac.h
diff --git a/content/browser/web_contents/web_drag_dest_mac.h b/content/browser/web_contents/web_drag_dest_mac.h
index 63a9efa417d1a794b9295ef71e0f6b7935c85af8..2598ee0e886d265a7f0759a8574e7c91ef1c10c9 100644
--- a/content/browser/web_contents/web_drag_dest_mac.h
+++ b/content/browser/web_contents/web_drag_dest_mac.h
@@ -4,7 +4,8 @@
 
 #import <Cocoa/Cocoa.h>
 
-#include "base/memory/scoped_ptr.h"
+#include <memory>
+
 #include "base/strings/string16.h"
 #include "content/common/content_export.h"
 #include "content/public/common/drop_data.h"
@@ -39,7 +40,7 @@ CONTENT_EXPORT
   RenderViewHostIdentifier currentRVH_;
 
   // The data for the current drag, or NULL if none is in progress.
-  scoped_ptr<content::DropData> dropData_;
+  std::unique_ptr<content::DropData> dropData_;
 
   // True if the drag has been canceled.
   bool canceled_;