[interpreter][stubs] Don't modify FLAG_csa_verify flag to make TSAN happy.

BUG=

Review-Url: https://codereview.chromium.org/2568173002
Cr-Commit-Position: refs/heads/master@{#41653}

src/builtins/builtins.cc

@@ -108,14 +108,7 @@ Code* BuildWithCodeStubAssemblerCS(Isolate* isolate,
   DCHECK_LE(0, descriptor.GetRegisterParameterCount());
   compiler::CodeAssemblerState state(isolate, &zone, descriptor, flags, name);
   generator(&state);
-
-  // TODO(ishell): remove this when code stub assembler graphs verification
-  // is enabled for all stubs.
-  bool saved_csa_verify = FLAG_csa_verify;
-  // Enable verification only in mksnapshot.
-  FLAG_csa_verify = DEBUG_BOOL && FLAG_startup_blob != nullptr;
   Handle<Code> code = compiler::CodeAssembler::GenerateCode(&state);
-  FLAG_csa_verify = saved_csa_verify;
   PostBuildProfileAndTracing(isolate, *code, name);
   return *code;
 }

src/code-stubs.cc

@@ -437,15 +437,7 @@ Handle<Code> TurboFanCodeStub::GenerateCode() {
   compiler::CodeAssemblerState state(isolate(), &zone, descriptor,
                                      GetCodeFlags(), name);
   GenerateAssembly(&state);
-
-  // TODO(ishell): remove this when code stub assembler graphs verification
-  // is enabled for all stubs.
-  bool saved_csa_verify = FLAG_csa_verify;
-  // Enable verification only in mksnapshot.
-  FLAG_csa_verify = DEBUG_BOOL && FLAG_startup_blob != nullptr;
-  Handle<Code> code = compiler::CodeAssembler::GenerateCode(&state);
-  FLAG_csa_verify = saved_csa_verify;
-  return code;
+  return compiler::CodeAssembler::GenerateCode(&state);
 }
 
 #define ACCESSOR_ASSEMBLER(Name)                                       \

src/interpreter/interpreter.cc

@@ -98,12 +98,6 @@ void Interpreter::InstallBytecodeHandler(Zone* zone, Bytecode bytecode,
                                          BytecodeGeneratorFunc generator) {
   if (!Bytecodes::BytecodeHasHandler(bytecode, operand_scale)) return;
 
-  // TODO(ishell): remove this when code stub assembler graphs verification
-  // is enabled for all stubs.
-  bool sav_csa_verify = FLAG_csa_verify;
-  // Enable verification only in mksnapshot.
-  FLAG_csa_verify = DEBUG_BOOL && FLAG_startup_blob != nullptr;
-
   InterpreterDispatchDescriptor descriptor(isolate_);
   compiler::CodeAssemblerState state(
       isolate_, zone, descriptor, Code::ComputeFlags(Code::BYTECODE_HANDLER),
@@ -118,7 +112,6 @@ void Interpreter::InstallBytecodeHandler(Zone* zone, Bytecode bytecode,
                         CodeEventListener::BYTECODE_HANDLER_TAG,
                         AbstractCode::cast(*code),
                         Bytecodes::ToString(bytecode, operand_scale).c_str()));
-  FLAG_csa_verify = sav_csa_verify;
 }
 
 Code* Interpreter::GetBytecodeHandler(Bytecode bytecode,