diff --git a/core/fpdfapi/render/cpdf_textrenderer.cpp b/core/fpdfapi/render/cpdf_textrenderer.cpp
index 68bfc97..bc7622d 100644
--- a/core/fpdfapi/render/cpdf_textrenderer.cpp
+++ b/core/fpdfapi/render/cpdf_textrenderer.cpp
@@ -7,6 +7,7 @@
 #include "core/fpdfapi/render/cpdf_textrenderer.h"
 
 #include <algorithm>
+#include <vector>
 
 #include "core/fpdfapi/font/cpdf_font.h"
 #include "core/fpdfapi/render/charposlist.h"
@@ -27,8 +28,8 @@
 
 // static
 bool CPDF_TextRenderer::DrawTextPath(CFX_RenderDevice* pDevice,
-                                     const std::vector<uint32_t>& charCodes,
-                                     const std::vector<float>& charPos,
+                                     pdfium::span<const uint32_t> char_codes,
+                                     pdfium::span<const float> char_pos,
                                      CPDF_Font* pFont,
                                      float font_size,
                                      const CFX_Matrix& mtText2User,
@@ -39,7 +40,7 @@
                                      CFX_PathData* pClippingPath,
                                      int nFlag) {
   std::vector<TextCharPos> pos =
-      GetCharPosList(charCodes, charPos, pFont, font_size);
+      GetCharPosList(char_codes, char_pos, pFont, font_size);
   if (pos.empty())
     return true;
 
@@ -108,15 +109,15 @@
 
 // static
 bool CPDF_TextRenderer::DrawNormalText(CFX_RenderDevice* pDevice,
-                                       const std::vector<uint32_t>& charCodes,
-                                       const std::vector<float>& charPos,
+                                       pdfium::span<const uint32_t> char_codes,
+                                       pdfium::span<const float> char_pos,
                                        CPDF_Font* pFont,
                                        float font_size,
                                        const CFX_Matrix& mtText2Device,
                                        FX_ARGB fill_argb,
                                        const CPDF_RenderOptions& options) {
   std::vector<TextCharPos> pos =
-      GetCharPosList(charCodes, charPos, pFont, font_size);
+      GetCharPosList(char_codes, char_pos, pFont, font_size);
   if (pos.empty())
     return true;
 
diff --git a/core/fpdfapi/render/cpdf_textrenderer.h b/core/fpdfapi/render/cpdf_textrenderer.h
index 91ab4cc..3e78431 100644
--- a/core/fpdfapi/render/cpdf_textrenderer.h
+++ b/core/fpdfapi/render/cpdf_textrenderer.h
@@ -7,12 +7,11 @@
 #ifndef CORE_FPDFAPI_RENDER_CPDF_TEXTRENDERER_H_
 #define CORE_FPDFAPI_RENDER_CPDF_TEXTRENDERER_H_
 
-#include <vector>
-
 #include "core/fxcrt/fx_coordinates.h"
 #include "core/fxcrt/fx_string.h"
 #include "core/fxcrt/fx_system.h"
 #include "core/fxge/fx_dib.h"
+#include "third_party/base/span.h"
 
 class CFX_RenderDevice;
 class CFX_GraphStateData;
@@ -33,8 +32,8 @@
                              const CPDF_RenderOptions& options);
 
   static bool DrawTextPath(CFX_RenderDevice* pDevice,
-                           const std::vector<uint32_t>& charCodes,
-                           const std::vector<float>& charPos,
+                           pdfium::span<const uint32_t> char_codes,
+                           pdfium::span<const float> char_pos,
                            CPDF_Font* pFont,
                            float font_size,
                            const CFX_Matrix& mtText2User,
@@ -46,8 +45,8 @@
                            int nFlag);
 
   static bool DrawNormalText(CFX_RenderDevice* pDevice,
-                             const std::vector<uint32_t>& charCodes,
-                             const std::vector<float>& charPos,
+                             pdfium::span<const uint32_t> char_codes,
+                             pdfium::span<const float> char_pos,
                              CPDF_Font* pFont,
                              float font_size,
                              const CFX_Matrix& mtText2Device,