message: Remove int and uint{8,16,32,64} typedefs.
  #codehealth
diff: #include "absl/base/attributes.h"
  #include "absl/base/macros.h"
  -// Integral types.
  -typedef std::int8_t int8;
  -typedef std::int16_t int16;
  -typedef std::int32_t int32;
  -typedef std::int64_t int64;
  -
  -typedef std::uint8_t uint8;
  -typedef std::uint16_t uint16;
  -typedef std::uint32_t uint32;
  -typedef std::uint64_t uint64;
  -
  #endif // GOOGLE_JAPANESE_INPUT_BUILD
  