mac: Remove IsOSSnowLeopard().

third_party/apple_apsl/CFBase.h

Index: third_party/apple_apsl/CFBase.h
diff --git a/third_party/apple_apsl/CFBase.h b/third_party/apple_apsl/CFBase.h
index d74360afcda7fde57820e59d6f3eefa076048687..b3fbd179acfb548b1e19ab7f7caaa0bcf9272d10 100644
--- a/third_party/apple_apsl/CFBase.h
+++ b/third_party/apple_apsl/CFBase.h
@@ -30,26 +30,6 @@
 
 #include "CFRuntime.h"
 
-struct ChromeCFAllocatorLeopards {
-    ChromeCFRuntimeBase _base;
-#if DEPLOYMENT_TARGET_MACOSX || DEPLOYMENT_TARGET_EMBEDDED
-    size_t (*size)(struct _malloc_zone_t *zone, const void *ptr); /* returns the size of a block or 0 if not in this zone; must be fast, especially for negative answers */
-    void *(*malloc)(struct _malloc_zone_t *zone, size_t size);
-    void *(*calloc)(struct _malloc_zone_t *zone, size_t num_items, size_t size); /* same as malloc, but block returned is set to zero */
-    void *(*valloc)(struct _malloc_zone_t *zone, size_t size); /* same as malloc, but block returned is set to zero and is guaranteed to be page aligned */
-    void (*free)(struct _malloc_zone_t *zone, void *ptr);
-    void *(*realloc)(struct _malloc_zone_t *zone, void *ptr, size_t size);
-    void (*destroy)(struct _malloc_zone_t *zone); /* zone is destroyed and all memory reclaimed */
-    const char	*zone_name;
-    unsigned (*batch_malloc)(struct _malloc_zone_t *zone, size_t size, void **results, unsigned num_requested); /* given a size, returns pointers capable of holding that size; returns the number of pointers allocated (maybe 0 or less than num_requested) */
-    void (*batch_free)(struct _malloc_zone_t *zone, void **to_be_freed, unsigned num_to_be_freed); /* frees all the pointers in to_be_freed; note that to_be_freed may be overwritten during the process */
-    struct malloc_introspection_t	*introspect;
-    void	*reserved5;
-#endif
-    CFAllocatorRef _allocator;
-    CFAllocatorContext _context;
-};
-
 struct ChromeCFAllocatorLions {
     ChromeCFRuntimeBase _base;
 #if DEPLOYMENT_TARGET_MACOSX || DEPLOYMENT_TARGET_EMBEDDED