Add woff2 to src/third_party

third_party/woff2/src/table_tags.h

Index: third_party/woff2/src/table_tags.h
diff --git a/third_party/woff2/src/table_tags.h b/third_party/woff2/src/table_tags.h
new file mode 100644
index 0000000000000000000000000000000000000000..c9b09bb6e38a74f43bc7d543fd07a133b01f98b9
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+++ b/third_party/woff2/src/table_tags.h
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+// Copyright 2014 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Font table tags
+
+#ifndef WOFF2_TABLE_TAGS_H_
+#define WOFF2_TABLE_TAGS_H_
+
+#include <inttypes.h>
+
+namespace woff2 {
+
+// Tags of popular tables.
+static const uint32_t kGlyfTableTag = 0x676c7966;
+static const uint32_t kHeadTableTag = 0x68656164;
+static const uint32_t kLocaTableTag = 0x6c6f6361;
+static const uint32_t kDsigTableTag = 0x44534947;
+static const uint32_t kCffTableTag = 0x43464620;
+
+extern const uint32_t kKnownTags[];
+
+} // namespace woff2
+
+#endif  // WOFF2_TABLE_TAGS_H_