ld.lld: error: undefined symbol: unsigned long cc::PaintOpWriter::SerializedSize<unsigned long>()

diff -up chromium-122.0.6261.69/cc/paint/paint_op_writer.h.me chromium-122.0.6261.69/cc/paint/paint_op_writer.h
--- chromium-122.0.6261.69/cc/paint/paint_op_writer.h.me	2024-02-25 12:04:07.008177603 +0100
+++ chromium-122.0.6261.69/cc/paint/paint_op_writer.h	2024-02-25 12:14:45.972117522 +0100
@@ -112,7 +112,17 @@ class CC_PAINT_EXPORT PaintOpWriter {
 
  private:
   template <typename T>
-  static constexpr size_t SerializedSizeSimple();
+  static constexpr size_t SerializedSizeSimple() {
+    static_assert(!std::is_pointer_v<T>);
+    return base::bits::AlignUp(sizeof(T), kDefaultAlignment);
+  }
+
+  // size_t is always serialized as two uint32_ts to make the serialized result
+  // portable between 32bit and 64bit processes.
+  template <>
+    constexpr size_t SerializedSizeSimple<size_t>() {
+    return base::bits::AlignUp(2 * sizeof(uint32_t), kDefaultAlignment);
+  }
 
  public:
   // SerializedSize() returns the maximum serialized size of the given type or
@@ -123,7 +133,10 @@ class CC_PAINT_EXPORT PaintOpWriter {
   // deserialization, and make it possible to allow dynamic sizing for some
   // data types (see the specialized/overloaded functions).
   template <typename T>
-  static constexpr size_t SerializedSize();
+  static constexpr size_t SerializedSize() {
+    static_assert(std::is_arithmetic_v<T> || std::is_enum_v<T>);
+    return SerializedSizeSimple<T>();
+  }
   template <typename T>
   static constexpr size_t SerializedSize(const T& data);
   static size_t SerializedSize(const PaintImage& image);
@@ -439,24 +452,6 @@ class CC_PAINT_EXPORT PaintOpWriter {
 };
 
 template <typename T>
-constexpr size_t PaintOpWriter::SerializedSizeSimple() {
-  static_assert(!std::is_pointer_v<T>);
-  return base::bits::AlignUp(sizeof(T), kDefaultAlignment);
-}
-
-// size_t is always serialized as two uint32_ts to make the serialized result
-// portable between 32bit and 64bit processes.
-template <>
-constexpr size_t PaintOpWriter::SerializedSizeSimple<size_t>() {
-  return base::bits::AlignUp(2 * sizeof(uint32_t), kDefaultAlignment);
-}
-
-template <typename T>
-constexpr size_t PaintOpWriter::SerializedSize() {
-  static_assert(std::is_arithmetic_v<T> || std::is_enum_v<T>);
-  return SerializedSizeSimple<T>();
-}
-template <typename T>
 constexpr size_t PaintOpWriter::SerializedSize(const T& data) {
   return SerializedSizeSimple<T>();
 }