Revert of [refactoring] Split CodeAssemblerState out of CodeAssembler

test/cctest/compiler/function-tester.cc

 // Copyright 2014 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 "test/cctest/compiler/function-tester.h"
 
 #include "src/ast/ast-numbering.h"
 #include "src/compilation-info.h"
 #include "src/compiler.h"
 #include "src/compiler/linkage.h"
@@ skipping 28 matching lines @@
 
 FunctionTester::FunctionTester(Handle<Code> code, int param_count)
     : isolate(main_isolate()),
       function((FLAG_allow_natives_syntax = true,
                 NewFunction(BuildFunction(param_count).c_str()))),
       flags_(0) {
   Compile(function);
   function->ReplaceCode(*code);
 }
 
-FunctionTester::FunctionTester(Handle<Code> code) : FunctionTester(code, 0) {}
+FunctionTester::FunctionTester(const CallInterfaceDescriptor& descriptor,
+                               Handle<Code> code)
+    : FunctionTester(code, descriptor.GetParameterCount()) {}
 
 MaybeHandle<Object> FunctionTester::Call() {
   return Execution::Call(isolate, function, undefined(), 0, nullptr);
 }
 
 MaybeHandle<Object> FunctionTester::Call(Handle<Object> a) {
   Handle<Object> args[] = {a};
   return Execution::Call(isolate, function, undefined(), 1, args);
 }
 
@@ skipping 132 matching lines @@
 
   Handle<Code> code = Pipeline::GenerateCodeForTesting(&info, graph);
   CHECK(!code.is_null());
   function->ReplaceCode(*code);
   return function;
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8