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diff --git a/third_party/protobuf/3.4.0/src/google/protobuf/util/internal/type_info.h b/third_party/protobuf/3.4.0/src/google/protobuf/util/internal/type_info.h
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@@ -0,0 +1,92 @@
+// Protocol Buffers - Google's data interchange format
+// Copyright 2008 Google Inc.  All rights reserved.
+// https://developers.google.com/protocol-buffers/
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#ifndef GOOGLE_PROTOBUF_UTIL_CONVERTER_TYPE_INFO_H__
+#define GOOGLE_PROTOBUF_UTIL_CONVERTER_TYPE_INFO_H__
+
+#include <google/protobuf/stubs/common.h>
+#include <google/protobuf/type.pb.h>
+#include <google/protobuf/util/type_resolver.h>
+#include <google/protobuf/stubs/stringpiece.h>
+#include <google/protobuf/stubs/status.h>
+#include <google/protobuf/stubs/statusor.h>
+
+namespace google {
+namespace protobuf {
+namespace util {
+namespace converter {
+// Internal helper class for type resolving. Note that this class is not
+// thread-safe and should only be accessed in one thread.
+class LIBPROTOBUF_EXPORT TypeInfo {
+ public:
+  TypeInfo() {}
+  virtual ~TypeInfo() {}
+
+  // Resolves a type url into a Type. If the type url is invalid, returns
+  // INVALID_ARGUMENT error status. If the type url is valid but the
+  // corresponding type cannot be found, returns a NOT_FOUND error status.
+  //
+  // This TypeInfo class retains the ownership of the returned pointer.
+  virtual util::StatusOr<const google::protobuf::Type*> ResolveTypeUrl(
+      StringPiece type_url) const = 0;
+
+  // Resolves a type url into a Type. Like ResolveTypeUrl() but returns
+  // NULL if the type url is invalid or the type cannot be found.
+  //
+  // This TypeInfo class retains the ownership of the returned pointer.
+  virtual const google::protobuf::Type* GetTypeByTypeUrl(
+      StringPiece type_url) const = 0;
+
+  // Resolves a type url for an enum. Returns NULL if the type url is
+  // invalid or the type cannot be found.
+  //
+  // This TypeInfo class retains the ownership of the returned pointer.
+  virtual const google::protobuf::Enum* GetEnumByTypeUrl(
+      StringPiece type_url) const = 0;
+
+  // Looks up a field in the specified type given a CamelCase name.
+  virtual const google::protobuf::Field* FindField(
+      const google::protobuf::Type* type,
+      StringPiece camel_case_name) const = 0;
+
+  // Creates a TypeInfo object that looks up type information from a
+  // TypeResolver. Caller takes ownership of the returned pointer.
+  static TypeInfo* NewTypeInfo(TypeResolver* type_resolver);
+
+ private:
+  GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(TypeInfo);
+};
+
+}  // namespace converter
+}  // namespace util
+}  // namespace protobuf
+
+}  // namespace google
+#endif  // GOOGLE_PROTOBUF_UTIL_CONVERTER_TYPE_INFO_H__