[stubs] Improve code generation for ToBoolean.

src/factory.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 "src/factory.h"
 
 #include "src/accessors.h"
 #include "src/allocation-site-scopes.h"
 #include "src/base/bits.h"
 #include "src/bootstrapper.h"
@@ skipping 97 matching lines @@
   DCHECK(scope_info->is_declaration_scope());
   Handle<SloppyBlockWithEvalContextExtension> result =
       Handle<SloppyBlockWithEvalContextExtension>::cast(
           NewStruct(SLOPPY_BLOCK_WITH_EVAL_CONTEXT_EXTENSION_TYPE));
   result->set_scope_info(*scope_info);
   result->set_extension(*extension);
   return result;
 }
 
 Handle<Oddball> Factory::NewOddball(Handle<Map> map, const char* to_string,
-                                    Handle<Object> to_number, bool to_boolean,
+                                    Handle<Object> to_number,
                                     const char* type_of, byte kind) {
   Handle<Oddball> oddball = New<Oddball>(map, OLD_SPACE);
-  Oddball::Initialize(isolate(), oddball, to_string, to_number, to_boolean,
-                      type_of, kind);
+  Oddball::Initialize(isolate(), oddball, to_string, to_number, type_of, kind);
   return oddball;
 }
 
 
 Handle<FixedArray> Factory::NewFixedArray(int size, PretenureFlag pretenure) {
   DCHECK(0 <= size);
   CALL_HEAP_FUNCTION(
       isolate(),
       isolate()->heap()->AllocateFixedArray(size, pretenure),
       FixedArray);
@@ skipping 2374 matching lines @@
     Handle<AccessorInfo> prototype =
         Accessors::FunctionPrototypeInfo(isolate(), attribs);
     AccessorConstantDescriptor d(Handle<Name>(Name::cast(prototype->name())),
                                  prototype, attribs);
     map->AppendDescriptor(&d);
   }
 }
 
 }  // namespace internal
 }  // namespace v8