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>();

 }