Get rid of base::SharedMemory::NULLHandle();

base/memory/shared_memory_nacl.cc

Index: base/memory/shared_memory_nacl.cc
diff --git a/base/memory/shared_memory_nacl.cc b/base/memory/shared_memory_nacl.cc
index 74d3fcad48863d645ff5317f027fa1b1264d5687..670ade5ff34273e719affa5c1ea030d4bb0f252b 100644
--- a/base/memory/shared_memory_nacl.cc
+++ b/base/memory/shared_memory_nacl.cc
@@ -38,11 +38,6 @@ bool SharedMemory::IsHandleValid(const SharedMemoryHandle& handle) {
 }
 
 // static
-SharedMemoryHandle SharedMemory::NULLHandle() {
-  return SharedMemoryHandle();
-}
-
-// static
 void SharedMemory::CloseHandle(const SharedMemoryHandle& handle) {
   DCHECK(handle.IsValid());
   handle.Close();