Move Courgette from internal depot to third_party.

third_party/courgette/crc.cc

Index: third_party/courgette/crc.cc
===================================================================
--- third_party/courgette/crc.cc	(revision 0)
+++ third_party/courgette/crc.cc	(revision 0)
@@ -0,0 +1,22 @@
+// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Calculate Crc by calling CRC method in LZMA SDK
+
+#include "third_party/courgette/crc.h"
+
+extern "C" {
+#include "third_party/lzma_sdk/7zCrc.h"
+}
+
+namespace courgette {
+
+uint32 CalculateCrc(const uint8* buffer, size_t size) {
+  // CrcGenerateTable();
+  uint32 crc = 0xffffffffL;
+  // crc = ~CrcCalc(buffer, size);
+  return crc;
+}
+
+}  // namespace