2 files changed, 16 insertions, 14 deletions
diff --git a/core/src/fpdfapi/fpdf_render/fpdf_render_text.cpp b/core/src/fpdfapi/fpdf_render/fpdf_render_text.cpp
index d36125e1b8..50388332f8 100644
--- a/core/src/fpdfapi/fpdf_render/fpdf_render_text.cpp
+++ b/core/src/fpdfapi/fpdf_render/fpdf_render_text.cpp
@@ -11,14 +11,10 @@
 #include "render_int.h"
 extern FX_BOOL IsAvailableMatrix(const CFX_AffineMatrix& matrix);
 CPDF_Type3Cache::~CPDF_Type3Cache() {
-  FX_POSITION pos = m_SizeMap.GetStartPosition();
-  CFX_ByteString Key;
-  CPDF_Type3Glyphs* pSizeCache = NULL;
-  while (pos) {
-    pSizeCache = (CPDF_Type3Glyphs*)m_SizeMap.GetNextValue(pos);
-    delete pSizeCache;
+  for (const auto& pair : m_SizeMap) {
+    delete pair.second;
   }
-  m_SizeMap.RemoveAll();
+  m_SizeMap.clear();
 }
 CFX_GlyphBitmap* CPDF_Type3Cache::LoadGlyph(FX_DWORD charcode,
                                             const CFX_AffineMatrix* pMatrix,
@@ -29,10 +25,13 @@ CFX_GlyphBitmap* CPDF_Type3Cache::LoadGlyph(FX_DWORD charcode,
       4, FXSYS_round(pMatrix->a * 10000), FXSYS_round(pMatrix->b * 10000),
       FXSYS_round(pMatrix->c * 10000), FXSYS_round(pMatrix->d * 10000));
   CFX_ByteStringC FaceGlyphsKey(keygen.m_Key, keygen.m_KeyLen);
-  CPDF_Type3Glyphs* pSizeCache = NULL;
-  if (!m_SizeMap.Lookup(FaceGlyphsKey, (void*&)pSizeCache)) {
+  CPDF_Type3Glyphs* pSizeCache;
+  auto it = m_SizeMap.find(FaceGlyphsKey);
+  if (it == m_SizeMap.end()) {
     pSizeCache = new CPDF_Type3Glyphs;
-    m_SizeMap.SetAt(FaceGlyphsKey, pSizeCache);
+    m_SizeMap[FaceGlyphsKey] = pSizeCache;
+  } else {
+    pSizeCache = it->second;
   }
   CFX_GlyphBitmap* pGlyphBitmap;
   if (pSizeCache->m_GlyphMap.Lookup((void*)(uintptr_t)charcode,
diff --git a/core/src/fpdfapi/fpdf_render/render_int.h b/core/src/fpdfapi/fpdf_render/render_int.h
index 733e24cbcf..e195472ac1 100644
--- a/core/src/fpdfapi/fpdf_render/render_int.h
+++ b/core/src/fpdfapi/fpdf_render/render_int.h
@@ -12,8 +12,11 @@
 #include "../../../../third_party/base/nonstd_unique_ptr.h"
 #include "../../../include/fpdfapi/fpdf_pageobj.h"
 
+class CFX_GlyphBitmap;
 class CPDF_QuickStretcher;
+
 #define TYPE3_MAX_BLUES 16
+
 class CPDF_Type3Glyphs {
  public:
   CPDF_Type3Glyphs() {
@@ -30,11 +33,11 @@ class CPDF_Type3Glyphs {
   int m_TopBlue[TYPE3_MAX_BLUES], m_BottomBlue[TYPE3_MAX_BLUES];
   int m_TopBlueCount, m_BottomBlueCount;
 };
-class CFX_GlyphBitmap;
 class CPDF_Type3Cache {
  public:
-  CPDF_Type3Cache(CPDF_Type3Font* pFont) { m_pFont = pFont; }
+  explicit CPDF_Type3Cache(CPDF_Type3Font* pFont) : m_pFont(pFont) {}
   ~CPDF_Type3Cache();
+
   CFX_GlyphBitmap* LoadGlyph(FX_DWORD charcode,
                              const CFX_AffineMatrix* pMatrix,
                              FX_FLOAT retinaScaleX = 1.0f,
@@ -46,8 +49,8 @@ class CPDF_Type3Cache {
                                const CFX_AffineMatrix* pMatrix,
                                FX_FLOAT retinaScaleX = 1.0f,
                                FX_FLOAT retinaScaleY = 1.0f);
-  CPDF_Type3Font* m_pFont;
-  CFX_MapByteStringToPtr m_SizeMap;
+  CPDF_Type3Font* const m_pFont;
+  std::map<CFX_ByteString, CPDF_Type3Glyphs*> m_SizeMap;
 };
 class CPDF_TransferFunc {
  public: