Introduce FileSystemFileUtil and -Proxy to decorate base::file_util in webkit/fileapi.

base/format_macros.h

Index: base/format_macros.h
diff --git a/base/format_macros.h b/base/format_macros.h
index 3afad59bb36ad5d9e0aae5f029ab70eb78e12c10..595eaa4baac82d0e9ce81e231c36be4af5be1950 100644
--- a/base/format_macros.h
+++ b/base/format_macros.h
@@ -47,6 +47,10 @@
 #define PRIuS "zu"
 #endif
 
+#if !defined(PRIxS)
+#define PRIxS "zx"

[ericu, 2011/03/03 01:05:11]

This was only needed for the obfuscation code; you can drop this file from the
CL.

I think we *should* have these macros, they're just not relevant to this change.
 Feel free to add them in a separate CL if you want, but don't bother on my
account.

[Dai Mikurube (google.com), 2011/03/03 20:24:52]

Ok, thanks. I've dropped them from this CL. Let's add them with a change which
requires them.

+#endif
+
 #else  // OS_WIN
 
 #if !defined(PRId64)
@@ -69,6 +73,10 @@
 #define PRIuS "Iu"
 #endif
 
+#if !defined(PRIxS)
+#define PRIxS "Ix"
+#endif
+
 #endif
 
 #endif  // BASE_FORMAT_MACROS_H_