Share field trial allocator on MacOS

base/memory/shared_memory_handle_mac.cc

Index: base/memory/shared_memory_handle_mac.cc
diff --git a/base/memory/shared_memory_handle_mac.cc b/base/memory/shared_memory_handle_mac.cc
index 92abb6136404d667b8ac0c7006514e7b5761896a..16b39b59d93fbc31e1fe115fdf6d40fe5f73fcdf 100644
--- a/base/memory/shared_memory_handle_mac.cc
+++ b/base/memory/shared_memory_handle_mac.cc
@@ -177,7 +177,6 @@ bool SharedMemoryHandle::MapAt(off_t offset,
     case SharedMemoryHandle::POSIX:
       *memory = mmap(nullptr, bytes, PROT_READ | (read_only ? 0 : PROT_WRITE),
                      MAP_SHARED, file_descriptor_.fd, offset);
-

[Alexei Svitkine (slow), 2016/12/09 22:23:41]

Nit: Remove extra diff here.

       return *memory && *memory != reinterpret_cast<void*>(-1);
     case SharedMemoryHandle::MACH:
       DCHECK_EQ(pid_, GetCurrentProcId());