Linux: Fix an error from r249340. RAMFS_MAGIC != HUGETLBFS_MAGIC

Review URL: https://codereview.chromium.org/173363004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@252449 0039d316-1c4b-4281-b951-d872f2087c98


CrOS-Libchrome-Original-Commit: cdc2c31df29e480467ade48f840b95b5c419d9e4
diff --git a/base/file_util_linux.cc b/base/file_util_linux.cc
index 33edc90..14e801c 100644
--- a/base/file_util_linux.cc
+++ b/base/file_util_linux.cc
@@ -18,6 +18,9 @@
 #ifndef HUGETLBFS_MAGIC
 #define HUGETLBFS_MAGIC 0x958458f6
 #endif
+#ifndef RAMFS_MAGIC
+#define RAMFS_MAGIC 0x858458f6
+#endif
 #ifndef TMPFS_MAGIC
 #define TMPFS_MAGIC 0x01021994
 #endif
@@ -58,7 +61,8 @@
     case CODA_SUPER_MAGIC:
       *type = FILE_SYSTEM_CODA;
       break;
-    case HUGETLBFS_MAGIC:  // AKA ramfs
+    case HUGETLBFS_MAGIC:
+    case RAMFS_MAGIC:
     case TMPFS_MAGIC:
       *type = FILE_SYSTEM_MEMORY;
       break;