Net: make IsSafePortableRelativePath look for reserved names on all components.

net/base/net_util.h

Index: net/base/net_util.h
diff --git a/net/base/net_util.h b/net/base/net_util.h
index ecd7400cfa16e516a1d986ea76a807db5faa07a5..f241f4fd42339fd733e68aaeb2901ef20725ce07 100644
--- a/net/base/net_util.h
+++ b/net/base/net_util.h
@@ -298,10 +298,9 @@ NET_EXPORT base::FilePath GenerateFileName(
     const std::string& mime_type,
     const std::string& default_name);
 
-// Valid basenames:
+// Valid components:
 // * are not empty
 // * are not Windows reserved names (CON, NUL.zip, etc.)
-// * are just basenames
 // * do not have trailing separators
 // * do not equal kCurrentDirectory
 // * do not reference the parent directory
@@ -311,7 +310,7 @@ NET_EXPORT base::FilePath GenerateFileName(
 // - * do not end with Windows shell-integrated extensions (even on posix)
 // - * do not begin with '.' (which would hide them in most file managers)
 // - * do not end with ' ' or '.'
-NET_EXPORT bool IsSafePortableBasename(const base::FilePath& path);
+NET_EXPORT bool IsSafePortablePathComponent(const base::FilePath& component);
 
 // Basenames of valid relative paths are IsSafePortableBasename(), and internal
 // path components of valid relative paths are valid path components as