Fixes for Windows and Mac builds after r25250.

src/layout-descriptor-inl.h

 // 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.
 
 #ifndef V8_LAYOUT_DESCRIPTOR_INL_H_
 #define V8_LAYOUT_DESCRIPTOR_INL_H_
 
 #include "src/layout-descriptor.h"
 
 namespace v8 {
@@ skipping 135 matching lines @@
   }
   return LayoutDescriptor::cast(object);
 }
 
 
 // InobjectPropertiesHelper is a helper class for querying whether inobject
 // property at offset is Double or not.
 InobjectPropertiesHelper::InobjectPropertiesHelper(Map* map)
     : all_fields_tagged_(true),
       header_size_(0),
-      inobject_properties_count_(0),
       layout_descriptor_(LayoutDescriptor::FastPointerLayout()) {
   if (!FLAG_unbox_double_fields) return;
 
   layout_descriptor_ = map->layout_descriptor_gc_safe();
   if (layout_descriptor_->IsFastPointerLayout()) {
     return;
   }
 
   int inobject_properties = map->inobject_properties();
   DCHECK(inobject_properties > 0);
@@ skipping 10 matching lines @@
   // Object headers do not contain non-tagged fields.
   if (offset_in_bytes < header_size_) return true;
   int field_index = (offset_in_bytes - header_size_) / kPointerSize;
 
   return layout_descriptor_->IsTagged(field_index);
 }
 }
 }  // namespace v8::internal
 
 #endif  // V8_LAYOUT_DESCRIPTOR_INL_H_