[refactor] Separate generated builtins and C++ builtins into separate files

src/builtins/builtins-boolean.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-utils.h"
 #include "src/builtins/builtins.h"
-#include "src/code-stub-assembler.h"
 #include "src/counters.h"
 #include "src/objects-inl.h"
 
 namespace v8 {
 namespace internal {
 
 // -----------------------------------------------------------------------------
 // ES6 section 19.3 Boolean Objects
 
 // ES6 section 19.3.1.1 Boolean ( value ) for the [[Call]] case.
@@ skipping 11 matching lines @@
   Handle<JSReceiver> new_target = Handle<JSReceiver>::cast(args.new_target());
   DCHECK(*target == target->native_context()->boolean_function());
   Handle<JSObject> result;
   ASSIGN_RETURN_FAILURE_ON_EXCEPTION(isolate, result,
                                      JSObject::New(target, new_target));
   Handle<JSValue>::cast(result)->set_value(
       isolate->heap()->ToBoolean(value->BooleanValue()));
   return *result;
 }
 
-// ES6 section 19.3.3.2 Boolean.prototype.toString ( )
-void Builtins::Generate_BooleanPrototypeToString(
-    compiler::CodeAssemblerState* state) {
-  typedef compiler::Node Node;
-  CodeStubAssembler assembler(state);
-
-  Node* receiver = assembler.Parameter(0);
-  Node* context = assembler.Parameter(3);
-
-  Node* value = assembler.ToThisValue(
-      context, receiver, PrimitiveType::kBoolean, "Boolean.prototype.toString");
-  Node* result = assembler.LoadObjectField(value, Oddball::kToStringOffset);
-  assembler.Return(result);
-}
-
-// ES6 section 19.3.3.3 Boolean.prototype.valueOf ( )
-void Builtins::Generate_BooleanPrototypeValueOf(
-    compiler::CodeAssemblerState* state) {
-  typedef compiler::Node Node;
-  CodeStubAssembler assembler(state);
-
-  Node* receiver = assembler.Parameter(0);
-  Node* context = assembler.Parameter(3);
-
-  Node* result = assembler.ToThisValue(
-      context, receiver, PrimitiveType::kBoolean, "Boolean.prototype.valueOf");
-  assembler.Return(result);
-}
-
 }  // namespace internal
 }  // namespace v8