Add a size parameter to SharedMemoryHandle.

base/memory/shared_memory_handle_win.cc

Index: base/memory/shared_memory_handle_win.cc
diff --git a/base/memory/shared_memory_handle_win.cc b/base/memory/shared_memory_handle_win.cc
index 75930c026e822ec2f7ae8fbd962388f0be60aee2..901b7666e1870588b087c760df78b7a35f74b220 100644
--- a/base/memory/shared_memory_handle_win.cc
+++ b/base/memory/shared_memory_handle_win.cc
@@ -13,8 +13,9 @@ SharedMemoryHandle::SharedMemoryHandle()
     : handle_(nullptr), ownership_passes_to_ipc_(false) {}
 
 SharedMemoryHandle::SharedMemoryHandle(HANDLE h,
+                                       size_t size,
                                        const base::UnguessableToken& guid)
-    : handle_(h), ownership_passes_to_ipc_(false), guid_(guid) {}
+    : handle_(h), ownership_passes_to_ipc_(false), guid_(guid), size_(size) {}
 
 void SharedMemoryHandle::Close() const {
   DCHECK(handle_ != nullptr);
@@ -33,7 +34,7 @@ SharedMemoryHandle SharedMemoryHandle::Duplicate() const {
   if (!success)
     return SharedMemoryHandle();
 
-  base::SharedMemoryHandle handle(duped_handle, GetGUID());
+  base::SharedMemoryHandle handle(duped_handle, GetSize(), GetGUID());
   handle.SetOwnershipPassesToIPC(true);
   return handle;
 }