Remove FXFM_ENCODING_NONE.

FX_CreateFontEncodingEx() always passes FXFM_ENCODING_NONE. Just get rid
of it instead.

Change-Id: I417f84d8ae2f10ba874265a92576d3ef8481a9d6
Reviewed-on: https://pdfium-review.googlesource.com/42460
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>

core/fxge/cfx_unicodeencoding.h

diff --git a/core/fxge/cfx_unicodeencoding.h b/core/fxge/cfx_unicodeencoding.h
index 57848c1..338bfba 100644
--- a/core/fxge/cfx_unicodeencoding.h
+++ b/core/fxge/cfx_unicodeencoding.h
@@ -15,7 +15,6 @@
 #define FXFM_ENC_TAG(a, b, c, d)                                          \
   (((uint32_t)(a) << 24) | ((uint32_t)(b) << 16) | ((uint32_t)(c) << 8) | \
    (uint32_t)(d))
-#define FXFM_ENCODING_NONE FXFM_ENC_TAG(0, 0, 0, 0)
 #define FXFM_ENCODING_MS_SYMBOL FXFM_ENC_TAG('s', 'y', 'm', 'b')
 #define FXFM_ENCODING_UNICODE FXFM_ENC_TAG('u', 'n', 'i', 'c')
 #define FXFM_ENCODING_MS_SJIS FXFM_ENC_TAG('s', 'j', 'i', 's')

core/fxge/cfx_unicodeencodingex.cpp

diff --git a/core/fxge/cfx_unicodeencodingex.cpp b/core/fxge/cfx_unicodeencodingex.cpp
index a8db745..2f5eaf7 100644
--- a/core/fxge/cfx_unicodeencodingex.cpp
+++ b/core/fxge/cfx_unicodeencodingex.cpp
@@ -85,14 +85,10 @@
 }
 
 std::unique_ptr<CFX_UnicodeEncodingEx> FX_CreateFontEncodingEx(
-    CFX_Font* pFont,
-    uint32_t nEncodingID) {
+    CFX_Font* pFont) {
   if (!pFont || !pFont->GetFace())
     return nullptr;
 
-  if (nEncodingID != FXFM_ENCODING_NONE)
-    return FXFM_CreateFontEncoding(pFont, nEncodingID);
-
   for (uint32_t id : g_EncodingID) {
     auto pFontEncoding = FXFM_CreateFontEncoding(pFont, id);
     if (pFontEncoding)

core/fxge/cfx_unicodeencodingex.h

diff --git a/core/fxge/cfx_unicodeencodingex.h b/core/fxge/cfx_unicodeencodingex.h
index d9d349a..9511d2b 100644
--- a/core/fxge/cfx_unicodeencodingex.h
+++ b/core/fxge/cfx_unicodeencodingex.h
@@ -29,8 +29,6 @@
   uint32_t m_nEncodingID;
 };
 
-std::unique_ptr<CFX_UnicodeEncodingEx> FX_CreateFontEncodingEx(
-    CFX_Font* pFont,
-    uint32_t nEncodingID);
+std::unique_ptr<CFX_UnicodeEncodingEx> FX_CreateFontEncodingEx(CFX_Font* pFont);
 
 #endif  // CORE_FXGE_CFX_UNICODEENCODINGEX_H_

fxbarcode/oned/BC_OneDimWriter.cpp

diff --git a/fxbarcode/oned/BC_OneDimWriter.cpp b/fxbarcode/oned/BC_OneDimWriter.cpp
index c76817d..9ad053d 100644
--- a/fxbarcode/oned/BC_OneDimWriter.cpp
+++ b/fxbarcode/oned/BC_OneDimWriter.cpp
@@ -123,7 +123,7 @@
                                     int32_t fontSize,
                                     float& charsLen) {
   std::unique_ptr<CFX_UnicodeEncodingEx> encoding =
-      FX_CreateFontEncodingEx(cFont, FXFM_ENCODING_NONE);
+      FX_CreateFontEncodingEx(cFont);
 
   size_t length = text.GetLength();
   uint32_t* pCharCode = FX_Alloc(uint32_t, text.GetLength());

xfa/fgas/font/cfgas_gefont.cpp

diff --git a/xfa/fgas/font/cfgas_gefont.cpp b/xfa/fgas/font/cfgas_gefont.cpp
index 45119b7..4d5fb9f 100644
--- a/xfa/fgas/font/cfgas_gefont.cpp
+++ b/xfa/fgas/font/cfgas_gefont.cpp
@@ -106,7 +106,7 @@
   if (m_pFontEncoding)
     return true;
 
-  m_pFontEncoding = FX_CreateFontEncodingEx(m_pFont.Get(), FXFM_ENCODING_NONE);
+  m_pFontEncoding = FX_CreateFontEncodingEx(m_pFont.Get());
   return !!m_pFontEncoding;
 }