Serializer: serialize internal references via object visitor.

src/arm/assembler-arm.h

Index: src/arm/assembler-arm.h
diff --git a/src/arm/assembler-arm.h b/src/arm/assembler-arm.h
index fc143e17414e1b497e81c0029a9fda6fca3e4219..272ec9d44825af6ca456128a32f06c1791b93a7d 100644
--- a/src/arm/assembler-arm.h
+++ b/src/arm/assembler-arm.h
@@ -795,6 +795,10 @@ class Assembler : public AssemblerBase {
   inline static void deserialization_set_special_target_at(
       Address constant_pool_entry, Code* code, Address target);
 
+  // This sets the internal reference at the pc.
+  inline static void deserialization_set_target_internal_reference_at(
+      Address pc, Address target);
+
   // Here we are patching the address in the constant pool, not the actual call
   // instruction.  The address in the constant pool is the same size as a
   // pointer.