Explicitly mark helper methods that only operate on ASCII ranges

A number of our character helper methods take in wide character types,
but only do tests/operations on the ASCII range of characters. As a
very quick first pass I am renaming all of the foot-gun methods to
explictly call out this behaviour, while I do a bigger
cleanup/refactor.

BUG=pdfium:1035

Change-Id: Ia035dfa1cb6812fa6d45155c4565475032c4c165
Reviewed-on: https://pdfium-review.googlesource.com/28330
Commit-Queue: Ryan Harrison <rharrison@chromium.org>
Commit-Queue: dsinclair <dsinclair@chromium.org>
Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
Reviewed-by: dsinclair <dsinclair@chromium.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/core/fxge/android/cfpf_skiafontmgr.cpp b/core/fxge/android/cfpf_skiafontmgr.cpp
index d8b751d9b2..7413a69884 100644
--- a/core/fxge/android/cfpf_skiafontmgr.cpp
+++ b/core/fxge/android/cfpf_skiafontmgr.cpp
@@ -97,7 +97,7 @@ uint32_t FPF_GetHashCode_StringA(const char* pStr, int32_t iLength) {
   const char* pStrEnd = pStr + iLength;
   uint32_t uHashCode = 0;
   while (pStr < pStrEnd)
-    uHashCode = 31 * uHashCode + FXSYS_tolower(*pStr++);
+    uHashCode = 31 * uHashCode + FXSYS_toASCIIlower(*pStr++);
   return uHashCode;
 }
 
@@ -167,7 +167,7 @@ uint32_t FPF_SKIANormalizeFontName(const ByteStringView& bsfamily) {
     char ch = pBuffer[i];
     if (ch == ' ' || ch == '-' || ch == ',')
       continue;
-    dwHash = 31 * dwHash + FXSYS_tolower(ch);
+    dwHash = 31 * dwHash + FXSYS_toASCIIlower(ch);
   }
   return dwHash;
 }