64-bit support for Mac OS X in base_unittests

base/process_util_unittest_mac.h

Index: base/process_util_unittest_mac.h
===================================================================
--- base/process_util_unittest_mac.h	(revision 47162)
+++ base/process_util_unittest_mac.h	(working copy)
@@ -14,13 +14,19 @@
 
 // Allocates memory via system allocators. Alas, they take a _signed_ size for
 // allocation.
-void* AllocateViaCFAllocatorSystemDefault(int32 size);
-void* AllocateViaCFAllocatorMalloc(int32 size);
-void* AllocateViaCFAllocatorMallocZone(int32 size);
+void* AllocateViaCFAllocatorSystemDefault(ssize_t size);
+void* AllocateViaCFAllocatorMalloc(ssize_t size);
+void* AllocateViaCFAllocatorMallocZone(ssize_t size);
 
+#if !defined(ARCH_CPU_64_BITS)
+// See process_util_unittest_mac.mm for an explanation of why this function
+// isn't implemented for the 64-bit environment.
+
 // Allocates a huge Objective C object.
 void* AllocatePsychoticallyBigObjCObject();
 
-} // namespace base
+#endif  // !ARCH_CPU_64_BITS
 
+}  // namespace base
+
 #endif  // BASE_PROCESS_UTIL_UNITTEST_MAC_H_