1. Enable large object pointer offset check in release build.

base/allocator/allocator_shim.cc

Index: base/allocator/allocator_shim.cc
===================================================================
--- base/allocator/allocator_shim.cc	(revision 137587)
+++ base/allocator/allocator_shim.cc	(working copy)
@@ -328,5 +328,17 @@
 #endif  // ENABLE_DYNAMIC_ALLOCATOR_SWITCHING
 }
 
+void* TCMallocDoMallocForTest(size_t size) {
+  return do_malloc(size);
+}
+
+void TCMallocDoFreeForTest(void* ptr) {
+  do_free(ptr);
+}
+
+size_t ExcludeSpaceForMarkForTest(size_t size) {
+  return ExcludeSpaceForMark(size);
+}
+
 }  // namespace allocator.
 }  // namespace base.