Revert of [refactoring] Split CodeAssemblerState out of CodeAssembler

src/builtins/builtins-generator.cc

 // Copyright 2016 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/builtins/builtins.h"
 #include "src/builtins/builtins-utils.h"
 
 #include "src/code-factory.h"
 
 namespace v8 {
@@ skipping 78 matching lines @@
   {
     Node* result =
         assembler->CallRuntime(Runtime::kThrowGeneratorRunning, context);
     assembler->Return(result);  // Never reached.
   }
 }
 
 }  // anonymous namespace
 
 // ES6 section 25.3.1.2 Generator.prototype.next ( value )
-void Builtins::Generate_GeneratorPrototypeNext(
-    compiler::CodeAssemblerState* state) {
-  CodeStubAssembler assembler(state);
-  Generate_GeneratorPrototypeResume(&assembler, JSGeneratorObject::kNext,
+void Builtins::Generate_GeneratorPrototypeNext(CodeStubAssembler* assembler) {
+  Generate_GeneratorPrototypeResume(assembler, JSGeneratorObject::kNext,
                                     "[Generator].prototype.next");
 }
 
 // ES6 section 25.3.1.3 Generator.prototype.return ( value )
-void Builtins::Generate_GeneratorPrototypeReturn(
-    compiler::CodeAssemblerState* state) {
-  CodeStubAssembler assembler(state);
-  Generate_GeneratorPrototypeResume(&assembler, JSGeneratorObject::kReturn,
+void Builtins::Generate_GeneratorPrototypeReturn(CodeStubAssembler* assembler) {
+  Generate_GeneratorPrototypeResume(assembler, JSGeneratorObject::kReturn,
                                     "[Generator].prototype.return");
 }
 
 // ES6 section 25.3.1.4 Generator.prototype.throw ( exception )
-void Builtins::Generate_GeneratorPrototypeThrow(
-    compiler::CodeAssemblerState* state) {
-  CodeStubAssembler assembler(state);
-  Generate_GeneratorPrototypeResume(&assembler, JSGeneratorObject::kThrow,
+void Builtins::Generate_GeneratorPrototypeThrow(CodeStubAssembler* assembler) {
+  Generate_GeneratorPrototypeResume(assembler, JSGeneratorObject::kThrow,
                                     "[Generator].prototype.throw");
 }
 
 }  // namespace internal
 }  // namespace v8