Revert https://codereview.chromium.org/1291903002 (protobuf roll).

third_party/protobuf/src/google/protobuf/util/internal/datapiece.h

Index: third_party/protobuf/src/google/protobuf/util/internal/datapiece.h
diff --git a/third_party/protobuf/src/google/protobuf/util/internal/datapiece.h b/third_party/protobuf/src/google/protobuf/util/internal/datapiece.h
deleted file mode 100644
index 30947252cef7857ad39393cd97f42c62939ea16e..0000000000000000000000000000000000000000
--- a/third_party/protobuf/src/google/protobuf/util/internal/datapiece.h
+++ /dev/null
@@ -1,212 +0,0 @@
-// 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_DATAPIECE_H__
-#define GOOGLE_PROTOBUF_UTIL_CONVERTER_DATAPIECE_H__
-
-#include <string>
-
-#include <google/protobuf/stubs/common.h>
-#include <google/protobuf/stubs/stringpiece.h>
-#include <google/protobuf/stubs/statusor.h>
-
-
-namespace google {
-namespace protobuf {
-class Enum;
-}  // namespace protobuf
-
-
-namespace protobuf {
-namespace util {
-namespace converter {
-
-// Container for a single piece of data together with its data type.
-//
-// For primitive types (int32, int64, uint32, uint64, double, float, bool),
-// the data is stored by value.
-//
-// For string, a StringPiece is stored. For Cord, a pointer to Cord is stored.
-// Just like StringPiece, the DataPiece class does not own the storage for
-// the actual string or Cord, so it is the user's responsiblity to guarantee
-// that the underlying storage is still valid when the DataPiece is accessed.
-class LIBPROTOBUF_EXPORT DataPiece {
- public:
-  // Identifies data type of the value.
-  // These are the types supported by DataPiece.
-  enum Type {
-    TYPE_INT32 = 1,
-    TYPE_INT64 = 2,
-    TYPE_UINT32 = 3,
-    TYPE_UINT64 = 4,
-    TYPE_DOUBLE = 5,
-    TYPE_FLOAT = 6,
-    TYPE_BOOL = 7,
-    TYPE_ENUM = 8,
-    TYPE_STRING = 9,
-    TYPE_BYTES = 10,
-    TYPE_NULL = 11,  // explicit NULL type
-  };
-
-  // Constructors and Destructor
-  explicit DataPiece(const int32 value) : type_(TYPE_INT32), i32_(value) {}
-  explicit DataPiece(const int64 value) : type_(TYPE_INT64), i64_(value) {}
-  explicit DataPiece(const uint32 value) : type_(TYPE_UINT32), u32_(value) {}
-  explicit DataPiece(const uint64 value) : type_(TYPE_UINT64), u64_(value) {}
-  explicit DataPiece(const double value) : type_(TYPE_DOUBLE), double_(value) {}
-  explicit DataPiece(const float value) : type_(TYPE_FLOAT), float_(value) {}
-  explicit DataPiece(const bool value) : type_(TYPE_BOOL), bool_(value) {}
-  explicit DataPiece(StringPiece value)
-      : type_(TYPE_STRING),
-        str_(StringPiecePod::CreateFromStringPiece(value)) {}
-  // Constructor for bytes. The second parameter is not used.
-  explicit DataPiece(StringPiece value, bool dummy)
-      : type_(TYPE_BYTES), str_(StringPiecePod::CreateFromStringPiece(value)) {}
-  DataPiece(const DataPiece& r) : type_(r.type_), str_(r.str_) {}
-  DataPiece& operator=(const DataPiece& x) {
-    type_ = x.type_;
-    str_ = x.str_;
-    return *this;
-  }
-
-  static DataPiece NullData() { return DataPiece(TYPE_NULL, 0); }
-
-  virtual ~DataPiece() {}
-
-  // Accessors
-  Type type() const { return type_; }
-
-  StringPiece str() const {
-    GOOGLE_LOG_IF(DFATAL, type_ != TYPE_STRING) << "Not a string type.";
-    return str_;
-  }
-
-
-  // Parses, casts or converts the value stored in the DataPiece into an int32.
-  util::StatusOr<int32> ToInt32() const;
-
-  // Parses, casts or converts the value stored in the DataPiece into a uint32.
-  util::StatusOr<uint32> ToUint32() const;
-
-  // Parses, casts or converts the value stored in the DataPiece into an int64.
-  util::StatusOr<int64> ToInt64() const;
-
-  // Parses, casts or converts the value stored in the DataPiece into a uint64.
-  util::StatusOr<uint64> ToUint64() const;
-
-  // Parses, casts or converts the value stored in the DataPiece into a double.
-  util::StatusOr<double> ToDouble() const;
-
-  // Parses, casts or converts the value stored in the DataPiece into a float.
-  util::StatusOr<float> ToFloat() const;
-
-  // Parses, casts or converts the value stored in the DataPiece into a bool.
-  util::StatusOr<bool> ToBool() const;
-
-  // Parses, casts or converts the value stored in the DataPiece into a string.
-  util::StatusOr<string> ToString() const;
-
-  // Tries to convert the value contained in this datapiece to string. If the
-  // conversion fails, it returns the default_string.
-  string ValueAsStringOrDefault(StringPiece default_string) const;
-
-  util::StatusOr<string> ToBytes() const;
-
-  // Converts a value into protocol buffer enum number. If the value is a
-  // string, first attempts conversion by name, trying names as follows:
-  //   1) the directly provided string value.
-  //   2) the value upper-cased and replacing '-' by '_'
-  // If the value is not a string, attempts to convert to a 32-bit integer.
-  // If none of these succeeds, returns a conversion error status.
-  util::StatusOr<int> ToEnum(const google::protobuf::Enum* enum_type) const;
-
- private:
-  // Disallow implicit constructor.
-  DataPiece();
-
-  // Helper to create NULL or ENUM types.
-  DataPiece(Type type, int32 val) : type_(type), i32_(val) {}
-
-  // For numeric conversion between
-  //     int32, int64, uint32, uint64, double, float and bool
-  template <typename To>
-  util::StatusOr<To> GenericConvert() const;
-
-  // For conversion from string to
-  //     int32, int64, uint32, uint64, double, float and bool
-  template <typename To>
-  util::StatusOr<To> StringToNumber(bool (*func)(StringPiece, To*)) const;
-
-  // Data type for this piece of data.
-  Type type_;
-
-  // StringPiece is not a POD and can not be used in an union (pre C++11). We
-  // need a POD version of it.
-  struct StringPiecePod {
-    const char* data;
-    int size;
-
-    // Create from a StringPiece.
-    static StringPiecePod CreateFromStringPiece(StringPiece str) {
-      StringPiecePod pod;
-      pod.data = str.data();
-      pod.size = str.size();
-      return pod;
-    }
-
-    // Cast to StringPiece.
-    operator StringPiece() const { return StringPiece(data, size); }
-
-    bool operator==(const char* value) const {
-      return StringPiece(data, size) == StringPiece(value);
-    }
-
-    string ToString() const { return string(data, size); }
-  };
-
-  // Stored piece of data.
-  union {
-    const int32 i32_;
-    const int64 i64_;
-    const uint32 u32_;
-    const uint64 u64_;
-    const double double_;
-    const float float_;
-    const bool bool_;
-    StringPiecePod str_;
-  };
-};
-
-}  // namespace converter
-}  // namespace util
-}  // namespace protobuf
-
-}  // namespace google
-#endif  // GOOGLE_PROTOBUF_UTIL_CONVERTER_DATAPIECE_H__