Get rid of SharedMemory::GiveToProcess.

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 32c321068158d5c3fa4e8228e9bdb8c91e27a78a..8e3387699c5e38ea2cc2dc687b2708e664ddbf76 100644
--- a/base/memory/shared_memory_nacl.cc
+++ b/base/memory/shared_memory_nacl.cc
@@ -132,13 +132,8 @@ SharedMemoryHandle SharedMemory::GetReadOnlyHandle() {
 }
 
 bool SharedMemory::ShareToProcessCommon(ProcessHandle process,
-                                        SharedMemoryHandle* new_handle,
-                                        bool close_self) {
+                                        SharedMemoryHandle* new_handle) {
   *new_handle = shm_.Duplicate();
-  if (close_self) {
-    Unmap();
-    Close();
-  }
   return new_handle->IsValid();
 }