Convert the C++ Style Guide Away from scoped_comptr.h

scoped_comptr.h is going away.

BUG=638327

Change-Id: Iedfc41cda41e717eda28f593b129207c3749891e
Reviewed-on: https://chromium-review.googlesource.com/724232
Commit-Queue: Robert Liao <[email protected]>
Reviewed-by: danakj <[email protected]>
Cr-Commit-Position: refs/heads/master@{#509647}
diff --git a/styleguide/c++/c++.md b/styleguide/c++/c++.md
index 423e0fc..344704d 100644
--- a/styleguide/c++/c++.md
+++ b/styleguide/c++/c++.md
@@ -162,7 +162,7 @@
 
   #if defined(OS_WIN)
   #include <windows.h>
-  #include "base/win/scoped_comptr.h"
+  #include "base/win/com_init_util.h"
   #elif defined(OS_POSIX)
   #include "base/posix/global_descriptors.h"
   #endif