Allocate filler objects in the factory.

src/factory.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_FACTORY_H_
 #define V8_FACTORY_H_
 
 #include "isolate.h"
 
 namespace v8 {
@@ skipping 251 matching lines @@
   Handle<PropertyCell> NewPropertyCell(Handle<Object> value);
 
   // Allocate a tenured AllocationSite. It's payload is null.
   Handle<AllocationSite> NewAllocationSite();
 
   Handle<Map> NewMap(
       InstanceType type,
       int instance_size,
       ElementsKind elements_kind = TERMINAL_FAST_ELEMENTS_KIND);
 
+  Handle<HeapObject> NewFillerObject(int size,
+                                     bool double_align,
+                                     AllocationSpace space);
+
   Handle<JSObject> NewFunctionPrototype(Handle<JSFunction> function);
 
   Handle<FixedArray> CopyFixedArray(Handle<FixedArray> array);
 
   // This method expects a COW array in new space, and creates a copy
   // of it in old space.
   Handle<FixedArray> CopyAndTenureFixedCOWArray(Handle<FixedArray> array);
 
   Handle<FixedArray> CopySizeFixedArray(Handle<FixedArray> array,
                                         int new_length,
@@ skipping 377 matching lines @@
   // the string representation of the number.  Otherwise return undefined.
   Handle<Object> GetNumberStringCache(Handle<Object> number);
 
   // Update the cache with a new number-string pair.
   void SetNumberStringCache(Handle<Object> number, Handle<String> string);
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_FACTORY_H_