diff --git a/core/fpdfapi/page/cpdf_meshstream.cpp b/core/fpdfapi/page/cpdf_meshstream.cpp
index 60759f0..7484f30 100644
--- a/core/fpdfapi/page/cpdf_meshstream.cpp
+++ b/core/fpdfapi/page/cpdf_meshstream.cpp
@@ -12,6 +12,7 @@
 #include "core/fpdfapi/parser/cpdf_dictionary.h"
 #include "core/fpdfapi/parser/cpdf_stream.h"
 #include "core/fpdfapi/parser/cpdf_stream_acc.h"
+#include "core/fxcrt/cfx_bitstream.h"
 #include "third_party/base/check.h"
 #include "third_party/base/span.h"
 
@@ -149,6 +150,18 @@
   return true;
 }
 
+void CPDF_MeshStream::SkipBits(uint32_t nbits) {
+  m_BitStream->SkipBits(nbits);
+}
+
+void CPDF_MeshStream::ByteAlign() {
+  m_BitStream->ByteAlign();
+}
+
+bool CPDF_MeshStream::IsEOF() const {
+  return m_BitStream->IsEOF();
+}
+
 bool CPDF_MeshStream::CanReadFlag() const {
   return m_BitStream->BitsRemaining() >= m_nFlagBits;
 }
diff --git a/core/fpdfapi/page/cpdf_meshstream.h b/core/fpdfapi/page/cpdf_meshstream.h
index e012b52..e828108 100644
--- a/core/fpdfapi/page/cpdf_meshstream.h
+++ b/core/fpdfapi/page/cpdf_meshstream.h
@@ -14,7 +14,6 @@
 #include <vector>
 
 #include "core/fpdfapi/page/cpdf_shadingpattern.h"
-#include "core/fxcrt/cfx_bitstream.h"
 #include "core/fxcrt/retain_ptr.h"
 
 class CPDF_StreamAcc;
@@ -31,6 +30,7 @@
   float b = 0.0f;
 };
 
+class CFX_BitStream;
 class CFX_Matrix;
 class CPDF_ColorSpace;
 class CPDF_Function;
@@ -45,7 +45,10 @@
   ~CPDF_MeshStream();
 
   bool Load();
+  void SkipBits(uint32_t nbits);
+  void ByteAlign();
 
+  bool IsEOF() const;
   bool CanReadFlag() const;
   bool CanReadCoords() const;
   bool CanReadColor() const;
@@ -60,7 +63,6 @@
   std::vector<CPDF_MeshVertex> ReadVertexRow(const CFX_Matrix& pObject2Bitmap,
                                              int count);
 
-  CFX_BitStream* BitStream() { return m_BitStream.get(); }
   uint32_t ComponentBits() const { return m_nComponentBits; }
   uint32_t Components() const { return m_nComponents; }
 
diff --git a/core/fpdfapi/page/cpdf_streamcontentparser.cpp b/core/fpdfapi/page/cpdf_streamcontentparser.cpp
index b2a80ce..d7034c7 100644
--- a/core/fpdfapi/page/cpdf_streamcontentparser.cpp
+++ b/core/fpdfapi/page/cpdf_streamcontentparser.cpp
@@ -94,7 +94,7 @@
   else
     color_count = kSingleColorPerPatch;
 
-  while (!stream.BitStream()->IsEOF()) {
+  while (!stream.IsEOF()) {
     uint32_t flag = 0;
     if (type != kLatticeFormGouraudTriangleMeshShading) {
       if (!stream.CanReadFlag())
@@ -125,9 +125,9 @@
     if (!nBits.IsValid())
       break;
 
-    stream.BitStream()->SkipBits(nBits.ValueOrDie());
+    stream.SkipBits(nBits.ValueOrDie());
     if (bGouraud)
-      stream.BitStream()->ByteAlign();
+      stream.ByteAlign();
   }
   return matrix.TransformRect(rect);
 }
diff --git a/core/fpdfapi/render/cpdf_rendershading.cpp b/core/fpdfapi/render/cpdf_rendershading.cpp
index f9751bd..a931a31 100644
--- a/core/fpdfapi/render/cpdf_rendershading.cpp
+++ b/core/fpdfapi/render/cpdf_rendershading.cpp
@@ -428,7 +428,7 @@
     return;
 
   CPDF_MeshVertex triangle[3];
-  while (!stream.BitStream()->IsEOF()) {
+  while (!stream.IsEOF()) {
     CPDF_MeshVertex vertex;
     uint32_t flag;
     if (!stream.ReadVertex(mtObject2Bitmap, &vertex, &flag))
@@ -804,7 +804,7 @@
 
   CFX_PointF coords[16];
   int point_count = type == kTensorProductPatchMeshShading ? 16 : 12;
-  while (!stream.BitStream()->IsEOF()) {
+  while (!stream.IsEOF()) {
     if (!stream.CanReadFlag())
       break;
     uint32_t flag = stream.ReadFlag();
diff --git a/core/fxge/skia/fx_skia_device.cpp b/core/fxge/skia/fx_skia_device.cpp
index a32ebf9..1531be4 100644
--- a/core/fxge/skia/fx_skia_device.cpp
+++ b/core/fxge/skia/fx_skia_device.cpp
@@ -2310,7 +2310,7 @@
     if (!skClip.isEmpty())
       m_pCanvas->clipPath(skClip, SkClipOp::kIntersect, true);
     m_pCanvas->concat(skMatrix);
-    while (!stream.BitStream()->IsEOF()) {
+    while (!stream.IsEOF()) {
       uint32_t flag = stream.ReadFlag();
       int iStartPoint = flag ? 4 : 0;
       int iStartColor = flag ? 2 : 0;