Move CT EV white list packaging API from chrome/ to components/.

chrome/browser/net/bit_stream_reader.h

-// Copyright 2014 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 CHROME_BROWSER_NET_BIT_STREAM_READER_H_
-#define CHROME_BROWSER_NET_BIT_STREAM_READER_H_
-
-#include <stdint.h>
-
-#include "base/strings/string_piece.h"
-
-namespace internal {
-
-// A class for reading individual bits from a packed buffer. Bits are read
-// MSB-first from the stream.
-// It is limited to 64-bit reads, 4GB streams and is inefficient as a design
-// choice. This class should not be used frequently.
-//
-// It is meant for data that is is packed across bytes, necessitating the need
-// to read a variable number of bits across a byte boundary.
-class BitStreamReader {
- public:
-  explicit BitStreamReader(const base::StringPiece& source);
-
-  // Reads unary-encoded number into |out|. Returns true if
-  // there was at least one bit to read, false otherwise.
-  bool ReadUnaryEncoding(uint64_t* out);
-
-  // Reads |num_bits| (up to 64) into |out|. |out| is filled from the MSB to the
-  // LSB. If |num_bits| is less than 64, the most significant |64 - num_bits|
-  // bits are unused and left as zeros. Returns true if the stream had the
-  // requested |num_bits|, false otherwise.
-  bool ReadBits(uint8_t num_bits, uint64_t* out);
-
-  // Returns the number of bits left in the stream.
-  uint64_t BitsLeft() const;
-
- private:
-  // Reads a single bit. Within a byte, the bits are read from the MSB to the
-  // LSB.
-  uint8_t ReadBit();
-
-  const base::StringPiece source_;
-
-  // Index of the byte currently being read from.
-  size_t current_byte_;
-
-  // Index of the last bit read within |current_byte_|. Since bits are read
-  // from the MSB to the LSB, this value is initialized to 7 and decremented
-  // after each read.
-  int8 current_bit_;
-
-  DISALLOW_COPY_AND_ASSIGN(BitStreamReader);
-};
-
-}  // namespace internal
-
-#endif  // CHROME_BROWSER_NET_BIT_STREAM_READER_H_