Rename domain_security_preload_generator.

net/tools/domain_security_preload_generator/bit_writer.h

-// Copyright (c) 2016 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 NET_TOOLS_DOMAIN_SECURITY_PRELOAD_GENERATOR_BIT_WRITER_H_
-#define NET_TOOLS_DOMAIN_SECURITY_PRELOAD_GENERATOR_BIT_WRITER_H_
-
-#include <stdint.h>
-
-#include <vector>
-
-namespace net {
-
-namespace transport_security_state {
-
-// BitWriter acts as a buffer to which bits can be written. The bits are stored
-// as bytes in a vector. BitWriter will buffer bits until it contains 8 bits at
-// which point they will be appended to the vector automatically.
-class BitWriter {
- public:
-  BitWriter();
-  ~BitWriter();
-
-  // Appends |bit| to the end of the buffer.
-  void WriteBit(uint8_t bit);
-
-  // Appends the |number_of_bits| least-significant bits of |bits| to the end of
-  // the buffer.
-  void WriteBits(uint32_t bits, uint8_t number_of_bits);
-
-  // Appends the buffered bits in |current_byte_| to the |bytes_| vector. When
-  // there are less than 8 bits in the buffer, the empty bits will be filled
-  // with zero's.
-  void Flush();
-  uint32_t position() const { return position_; }
-
-  // Returns a reference to |bytes_|. Make sure to call Flush() first so that
-  // the buffered bits are written to |bytes_| as well.
-  const std::vector<uint8_t>& bytes() const { return bytes_; }
-
- private:
-  // Returns the minimum number of bits needed to represent |input|.
-  uint8_t BitLength(uint32_t input) const;
-
-  // Buffers bits until they fill a whole byte.
-  uint8_t current_byte_ = 0;
-
-  // The number of bits currently in |current_byte_|.
-  uint8_t used_ = 0;
-
-  // Total number of bits written to this BitWriter.
-  uint32_t position_ = 0;
-
-  std::vector<uint8_t> bytes_;
-};
-
-}  // namespace transport_security_state
-
-}  // namespace net
-
-#endif  // NET_TOOLS_DOMAIN_SECURITY_PRELOAD_GENERATOR_BIT_WRITER_H_