Move path functions from file_util to FilePath object.

base/file_util_win.cc

Index: base/file_util_win.cc
diff --git a/base/file_util_win.cc b/base/file_util_win.cc
index f7897a0ab9b8d559a901f18c2fcab4f1987a8ef5..04879563476131842d88b16c4d316568bd9f9963 100644
--- a/base/file_util_win.cc
+++ b/base/file_util_win.cc
@@ -37,15 +37,6 @@ const DWORD kFileShareAll =
 
 }  // namespace
 
-bool AbsolutePath(FilePath* path) {
-  base::ThreadRestrictions::AssertIOAllowed();
-  wchar_t file_path_buf[MAX_PATH];
-  if (!_wfullpath(file_path_buf, path->value().c_str(), MAX_PATH))
-    return false;
-  *path = FilePath(file_path_buf);
-  return true;
-}
-
 int CountFilesCreatedAfter(const FilePath& path,
                            const base::Time& comparison_time) {
   base::ThreadRestrictions::AssertIOAllowed();