diff -r 000000000000 -r 6474c204b198 gfx/skia/trunk/src/ports/SkOSFile_none.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gfx/skia/trunk/src/ports/SkOSFile_none.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,26 @@
+/*
+ * Copyright 2013 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "SkOSFile.h"
+
+bool sk_fidentical(SkFILE* a, SkFILE* b) {
+    return false;
+}
+
+int sk_fileno(SkFILE* f) {
+    return -1;
+}
+
+void sk_fmunmap(const void* addr, size_t length) { }
+
+void* sk_fdmmap(int fd, size_t* size) {
+    return NULL;
+}
+
+void* sk_fmmap(SkFILE* f, size_t* size) {
+    return NULL;
+}