[v8] Move all the RelocInfo::set_target_address function into one place.

src/assembler.cc

Index: src/assembler.cc
diff --git a/src/assembler.cc b/src/assembler.cc
index 9235106db5ca2baebcc58b9b8f519e701a80dc09..83dbbe813409944fcb809c3db777a4d89d7195fa 100644
--- a/src/assembler.cc
+++ b/src/assembler.cc
@@ -388,6 +388,20 @@ void RelocInfo::update_wasm_global_reference(
   }
 }
 
+void RelocInfo::set_target_address(Address target,
+                                   WriteBarrierMode write_barrier_mode,
+                                   ICacheFlushMode icache_flush_mode) {
+  DCHECK(IsCodeTarget(rmode_) || IsRuntimeEntry(rmode_));
+  Assembler::set_target_address_at(isolate_, pc_, host_, target,
+                                   icache_flush_mode);
+  if (write_barrier_mode == UPDATE_WRITE_BARRIER && host() != NULL &&
+      IsCodeTarget(rmode_)) {
+    Object* target_code = Code::GetCodeFromTargetAddress(target);
+    host()->GetHeap()->incremental_marking()->RecordWriteIntoCode(
+        host(), this, HeapObject::cast(target_code));
+  }
+}
+
 uint32_t RelocInfoWriter::WriteLongPCJump(uint32_t pc_delta) {
   // Return if the pc_delta can fit in kSmallPCDeltaBits bits.
   // Otherwise write a variable length PC jump for the bits that do