Switch to standard integer types in printing/.

BUG=138542
[email protected]

Review URL: https://codereview.chromium.org/1544623002

Cr-Commit-Position: refs/heads/master@{#366463}
diff --git a/printing/printing_context_system_dialog_win.h b/printing/printing_context_system_dialog_win.h
index 39b24ae..75593e5 100644
--- a/printing/printing_context_system_dialog_win.h
+++ b/printing/printing_context_system_dialog_win.h
@@ -10,6 +10,7 @@
 
 #include <string>
 
+#include "base/macros.h"
 #include "printing/printing_context_win.h"
 #include "ui/gfx/native_widget_types.h"