Make CPDF_Dictionary methods take CFX_ByteString arguments

This will help avoid duplicate allocation of CFX_ByteStrings
when the caller already has one.  It may seem counter-intuitive
that requiring the caller to pass an allocated CFX_ByteString
rather than a static CFX_ByteStringC would improve the situation,
but due to the idiosyncrasies of std::map, the CPDF_Dictionary
methods must always do an allocation under the covers which
can't be avoided.

The changed callers in this CL are places where we would
previously demote to CFX_ByteStringC and then allocate a
a duplicate CFX_ByteString in the dictionary method.

Review URL: https://codereview.chromium.org/1889863002

1 files changed, 1 insertions, 1 deletions

diff --git a/core/fpdfapi/fpdf_page/fpdf_page_doc.cpp b/core/fpdfapi/fpdf_page/fpdf_page_doc.cpp
index 6cd66185c6..b9019f8577 100644
--- a/core/fpdfapi/fpdf_page/fpdf_page_doc.cpp
+++ b/core/fpdfapi/fpdf_page/fpdf_page_doc.cpp
@@ -331,7 +331,7 @@ CPDF_ColorSpace* CPDF_DocPageData::GetColorSpace(
     if (!pCS && pResources) {
       CPDF_Dictionary* pList = pResources->GetDictBy("ColorSpace");
       if (pList) {
-        pCSObj = pList->GetDirectObjectBy(name.AsStringC());
+        pCSObj = pList->GetDirectObjectBy(name);
         return GetColorSpace(pCSObj, nullptr);
       }
     }