<http://msdn.microsoft.com/en-us/library/8fskxacy.aspx> "Importing into an
Application Using __declspec(dllimport)":  "Using __declspec(dllimport) is
optional on function declarations, but the compiler produces more efficient code
if you use this keyword."

Change-Id: I149306049987b2406622d7a0dc5dde92d283a5b3