diff -r 000000000000 -r 6474c204b198 gfx/skia/trunk/src/ports/SkAtomics_none.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gfx/skia/trunk/src/ports/SkAtomics_none.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,49 @@
+/*
+ * Copyright 2013 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef SkAtomics_none_DEFINED
+#define SkAtomics_none_DEFINED
+
+/** Non-atomic atomics for uniprocessor systems. */
+
+#include <stdint.h>
+
+static inline int32_t sk_atomic_inc(int32_t* addr) {
+    int32_t value = *addr;
+    *addr = value + 1;
+    return value;
+}
+
+static inline int32_t sk_atomic_add(int32_t* addr, int32_t inc) {
+    int32_t value = *addr;
+    *addr = value + inc;
+    return value;
+}
+
+static inline int32_t sk_atomic_dec(int32_t* addr) {
+    int32_t value = *addr;
+    *addr = value - 1;
+    return value;
+}
+
+static inline void sk_membar_acquire__after_atomic_dec() { }
+
+static inline int32_t sk_atomic_conditional_inc(int32_t* addr) {
+    int32_t value = *addr;
+    if (value != 0) ++*addr;
+    return value;
+}
+
+static inline bool sk_atomic_cas(int32_t* addr, int32_t before, int32_t after) {
+    if (*addr != before) return false;
+    *addr = after;
+    return true;
+}
+
+static inline void sk_membar_acquire__after_atomic_conditional_inc() { }
+
+#endif