Add FLAC to trunk/deps/third_party/....

flac/include/share/alloc.h

+// Copyright (c) 2011 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.
+
+#ifndef THIRD_PARTY_FLAC_INCLUDE_SHARE_ALLOC_H
+#define THIRD_PARTY_FLAC_INCLUDE_SHARE_ALLOC_H
+
+void *safe_malloc_(size_t size);
+
+void *safe_calloc_(size_t num_items, size_t size);
+
+void *safe_malloc_add_2op_(size_t size1, size_t size2);
+
+void *safe_malloc_mul_2op_(size_t size1, size_t size2);
+
+void *safe_malloc_muladd2_(size_t size1, size_t size2, size_t size3);
+
+void *safe_realloc_mul_2op_(void *ptr, size_t size1, size_t size2);
+
+#endif  // THIRD_PARTY_FLAC_INCLUDE_SHARE_ALLOC_H