Re-write many calls to WrapUnique() with MakeUnique()

content/browser/fileapi/dragged_file_util_unittest.cc

Index: content/browser/fileapi/dragged_file_util_unittest.cc
diff --git a/content/browser/fileapi/dragged_file_util_unittest.cc b/content/browser/fileapi/dragged_file_util_unittest.cc
index fe18776f4f20514ca5e8ab79636cfefb8eb4c3cc..a373695aa9e565bfd59f3c5a2d137065f4da8d34 100644
--- a/content/browser/fileapi/dragged_file_util_unittest.cc
+++ b/content/browser/fileapi/dragged_file_util_unittest.cc
@@ -253,8 +253,8 @@ class DraggedFileUtilTest : public testing::Test {
   }
 
   std::unique_ptr<storage::FileSystemOperationContext> GetOperationContext() {
-    return base::WrapUnique(
-        new storage::FileSystemOperationContext(file_system_context()));
+    return base::MakeUnique<storage::FileSystemOperationContext>(
+        file_system_context());
   }