| Index: third_party/tcmalloc/chromium/src/free_list.h | 
| =================================================================== | 
| --- third_party/tcmalloc/chromium/src/free_list.h	(revision 104961) | 
| +++ third_party/tcmalloc/chromium/src/free_list.h	(working copy) | 
| @@ -43,9 +43,12 @@ | 
| #include "internal_logging.h"  // For CRASH() macro. | 
| #include "linked_list.h" | 
|  | 
| +// Remove to enable singly linked lists (the default for open source tcmalloc). | 
| +#define TCMALLOC_USE_DOUBLYLINKED_FREELIST | 
| + | 
| namespace tcmalloc { | 
|  | 
| -#ifdef TCMALLOC_USE_DOUBLYLINKED_FREELIST | 
| +#if defined(TCMALLOC_USE_DOUBLYLINKED_FREELIST) | 
|  | 
| // size class information for common.h. | 
| static const bool kSupportsDoublyLinkedList = true; | 
|  |