Revert of mac: Add auto-close and share-read-only functionality to SharedMemory.

ipc/test_util_mac.cc

Index: ipc/test_util_mac.cc
diff --git a/ipc/test_util_mac.cc b/ipc/test_util_mac.cc
index 5e26e1f78f4f1f7e5c9686325717cf3d21e81f2a..4639b13babe9f90ab8fd524c7d390c53b973797c 100644
--- a/ipc/test_util_mac.cc
+++ b/ipc/test_util_mac.cc
@@ -4,7 +4,6 @@
 
 #include "ipc/test_util_mac.h"
 
-#include <mach/mach_vm.h>
 #include <servers/bootstrap.h>
 
 #include "base/mac/mach_logging.h"
@@ -115,28 +114,4 @@
   MACH_CHECK(kr == KERN_SUCCESS, kr) << "GetRefCount";
 }
 
-bool GetMachProtections(void* address, size_t size, int* current, int* max) {
-  vm_region_info_t region_info;
-  mach_vm_address_t mem_address = reinterpret_cast<mach_vm_address_t>(address);
-  mach_vm_size_t mem_size = size;
-  vm_region_basic_info_64 basic_info;
-
-  region_info = reinterpret_cast<vm_region_recurse_info_t>(&basic_info);
-  vm_region_flavor_t flavor = VM_REGION_BASIC_INFO_64;
-  memory_object_name_t memory_object;
-  mach_port_t ctype;
-
-  kern_return_t kr =
-      mach_vm_region(mach_task_self(), &mem_address, &mem_size, flavor,
-                     region_info, &memory_object, &ctype);
-  if (kr != KERN_SUCCESS) {
-    LOG(ERROR) << "Failed to get region info.";
-    return false;
-  }
-
-  *current = basic_info.protection;
-  *max = basic_info.max_protection;
-  return true;
-}
-
 }  // namespace IPC