diff -r 000000000000 -r 6474c204b198 gfx/skia/trunk/src/utils/SkMD5.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gfx/skia/trunk/src/utils/SkMD5.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,55 @@
+/*
+ * Copyright 2012 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef SkMD5_DEFINED
+#define SkMD5_DEFINED
+
+#include "SkTypes.h"
+#include "SkEndian.h"
+#include "SkStream.h"
+
+//The following macros can be defined to affect the MD5 code generated.
+//SK_MD5_CLEAR_DATA causes all intermediate state to be overwritten with 0's.
+//SK_CPU_LENDIAN allows 32 bit <=> 8 bit conversions without copies (if alligned).
+//SK_CPU_FAST_UNALIGNED_ACCESS allows 32 bit <=> 8 bit conversions without copies if SK_CPU_LENDIAN.
+
+class SkMD5 : public SkWStream {
+public:
+    SkMD5();
+
+    /** Processes input, adding it to the digest.
+     *  Note that this treats the buffer as a series of uint8_t values.
+     */
+    virtual bool write(const void* buffer, size_t size) SK_OVERRIDE {
+        this->update(reinterpret_cast<const uint8_t*>(buffer), size);
+        return true;
+    }
+
+    virtual size_t bytesWritten() const SK_OVERRIDE { return SkToSizeT(this->byteCount); }
+
+    /** Processes input, adding it to the digest. Calling this after finish is undefined. */
+    void update(const uint8_t* input, size_t length);
+
+    struct Digest {
+        uint8_t data[16];
+    };
+
+    /** Computes and returns the digest. */
+    void finish(Digest& digest);
+
+private:
+    // number of bytes, modulo 2^64
+    uint64_t byteCount;
+
+    // state (ABCD)
+    uint32_t state[4];
+
+    // input buffer
+    uint8_t buffer[64];
+};
+
+#endif