Move fxcrt::{Byte,Wide}Strings with std::move().chromium/3466

Remove some string copies in barcode that were noticed whilst
looking for moves.

Change-Id: Ieda34d00f633576ba1f0dca283dcdabfb36f236c
Reviewed-on: https://pdfium-review.googlesource.com/35410
Reviewed-by: dsinclair <dsinclair@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Commit-Queue: Tom Sepez <tsepez@chromium.org>

1 files changed, 3 insertions, 1 deletions

diff --git a/core/fpdfdoc/cpdf_structelement.cpp b/core/fpdfdoc/cpdf_structelement.cpp
index 24c028fb61..d8fc0d88ba 100644
--- a/core/fpdfdoc/cpdf_structelement.cpp
+++ b/core/fpdfdoc/cpdf_structelement.cpp
@@ -6,6 +6,8 @@
 
 #include "core/fpdfdoc/cpdf_structelement.h"
 
+#include <utility>
+
 #include "core/fpdfapi/parser/cpdf_array.h"
 #include "core/fpdfapi/parser/cpdf_dictionary.h"
 #include "core/fpdfapi/parser/cpdf_name.h"
@@ -36,7 +38,7 @@ CPDF_StructElement::CPDF_StructElement(CPDF_StructTree* pTree,
   if (pTree->GetRoleMap()) {
     ByteString mapped = pTree->GetRoleMap()->GetStringFor(m_Type);
     if (!mapped.IsEmpty())
-      m_Type = mapped;
+      m_Type = std::move(mapped);
   }
   LoadKids(pDict);
 }