Convert //chrome/browser/extensions from scoped_ptr to std::unique_ptr

chrome/browser/extensions/api/permissions/permissions_api_helpers.h

Index: chrome/browser/extensions/api/permissions/permissions_api_helpers.h
diff --git a/chrome/browser/extensions/api/permissions/permissions_api_helpers.h b/chrome/browser/extensions/api/permissions/permissions_api_helpers.h
index 89e866a8cf4eb2084565edbb3328ff5a195869c3..4e06564f3215ea64b30e102756c00f3f592ed436 100644
--- a/chrome/browser/extensions/api/permissions/permissions_api_helpers.h
+++ b/chrome/browser/extensions/api/permissions/permissions_api_helpers.h
@@ -5,8 +5,9 @@
 #ifndef CHROME_BROWSER_EXTENSIONS_API_PERMISSIONS_PERMISSIONS_API_HELPERS_H_
 #define CHROME_BROWSER_EXTENSIONS_API_PERMISSIONS_PERMISSIONS_API_HELPERS_H_
 
+#include <memory>
 #include <string>
-#include "base/memory/scoped_ptr.h"
+
 #include "base/memory/ref_counted.h"
 
 namespace base {
@@ -26,12 +27,12 @@ struct Permissions;
 namespace permissions_api_helpers {
 
 // Converts the permission |set| to a permissions object.
-scoped_ptr<api::permissions::Permissions> PackPermissionSet(
+std::unique_ptr<api::permissions::Permissions> PackPermissionSet(
     const PermissionSet& set);
 
 // Creates a permission set from |permissions|. Returns NULL if the permissions
 // cannot be converted to a permission set, in which case |error| will be set.
-scoped_ptr<const PermissionSet> UnpackPermissionSet(
+std::unique_ptr<const PermissionSet> UnpackPermissionSet(
     const api::permissions::Permissions& permissions,
     bool allow_file_access,
     std::string* error);