[refactoring] Split CodeAssemblerState out of CodeAssembler

src/fast-accessor-assembler.cc

Index: src/fast-accessor-assembler.cc
diff --git a/src/fast-accessor-assembler.cc b/src/fast-accessor-assembler.cc
index ee9b241186e0e76218071dbbc44de5da97f79c89..92f98fd0cfe1952a48805524c2103cefc23ae732 100644
--- a/src/fast-accessor-assembler.cc
+++ b/src/fast-accessor-assembler.cc
@@ -19,9 +19,9 @@ namespace internal {
 FastAccessorAssembler::FastAccessorAssembler(Isolate* isolate)
     : zone_(isolate->allocator(), ZONE_NAME),
       isolate_(isolate),
-      assembler_(new CodeStubAssembler(isolate, zone(), 1,
-                                       Code::ComputeFlags(Code::STUB),
-                                       "FastAccessorAssembler")),
+      assembler_state_(isolate, zone(), 1, Code::ComputeFlags(Code::STUB),
+                       "FastAccessorAssembler"),
+      assembler_(new CodeStubAssembler(&assembler_state_)),
       state_(kBuilding) {}
 
 FastAccessorAssembler::~FastAccessorAssembler() { Clear(); }
@@ -248,7 +248,7 @@ void FastAccessorAssembler::CheckIsJSObjectOrJump(ValueId value_id,
 
 MaybeHandle<Code> FastAccessorAssembler::Build() {
   CHECK_EQ(kBuilding, state_);
-  Handle<Code> code = assembler_->GenerateCode();
+  Handle<Code> code = assembler_state_.GenerateCode();
   state_ = !code.is_null() ? kBuilt : kError;
   Clear();
   return code;