[stubs] Introduce a proper ToBooleanStub.

src/objects.cc

 // Copyright 2015 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/objects.h"
 
 #include <cmath>
 #include <iomanip>
 #include <sstream>
 
@@ skipping 13378 matching lines @@
     if (shared_info->name_should_print_as_anonymous()) {
       builder.AppendCString("anonymous");
     } else if (!shared_info->is_anonymous_expression()) {
       builder.AppendString(handle(String::cast(shared_info->name()), isolate));
     }
   }
   builder.AppendString(Handle<String>::cast(shared_info->GetSourceCode()));
   return builder.Finish().ToHandleChecked();
 }
 
-
 void Oddball::Initialize(Isolate* isolate, Handle<Oddball> oddball,
                          const char* to_string, Handle<Object> to_number,
-                         const char* type_of, byte kind) {
+                         bool to_boolean, const char* type_of, byte kind) {
   Handle<String> internalized_to_string =
       isolate->factory()->InternalizeUtf8String(to_string);
   Handle<String> internalized_type_of =
       isolate->factory()->InternalizeUtf8String(type_of);
+  oddball->set_to_boolean(isolate->heap()->ToBoolean(to_boolean));
   oddball->set_to_number(*to_number);
   oddball->set_to_string(*internalized_to_string);
   oddball->set_type_of(*internalized_type_of);
   oddball->set_kind(kind);
 }
 
 
 void Script::InitLineEnds(Handle<Script> script) {
   if (!script->line_ends()->IsUndefined()) return;
 
@@ skipping 6461 matching lines @@
   if (cell->value() != *new_value) {
     cell->set_value(*new_value);
     Isolate* isolate = cell->GetIsolate();
     cell->dependent_code()->DeoptimizeDependentCodeGroup(
         isolate, DependentCode::kPropertyCellChangedGroup);
   }
 }
 
 }  // namespace internal
 }  // namespace v8