Use SharedMemoryHandle instead ScopedHandle as ivar for SharedMemory

base/memory/shared_memory.h

Index: base/memory/shared_memory.h
diff --git a/base/memory/shared_memory.h b/base/memory/shared_memory.h
index 154d808cc8cd71bbd13ba531e9a6643ecd5b6f89..89bc24ac0230e7facf3f021595a6613fa2a22001 100644
--- a/base/memory/shared_memory.h
+++ b/base/memory/shared_memory.h
@@ -241,10 +241,7 @@ class BASE_EXPORT SharedMemory {
   // before being mapped.
   bool external_section_;
   std::wstring       name_;
-  win::ScopedHandle  mapped_file_;
 #else
-  // The OS primitive that backs the shared memory region.
-  SharedMemoryHandle shm_;
 
   // If valid, points to the same memory region as shm_, but with readonly
   // permissions.
@@ -257,6 +254,9 @@ class BASE_EXPORT SharedMemory {
   SharedMemoryHandle::Type mapped_memory_mechanism_;
 #endif
 
+  // The OS primitive that backs the shared memory region.
+  SharedMemoryHandle shm_;
+
   size_t             mapped_size_;
   void*              memory_;
   bool               read_only_;