Merge "Add CODE_POINT_BEGINNING_OF_SENTENCE in native code."

#define KEYCODE_SPACE ' '

#define KEYCODE_SINGLE_QUOTE '\''

#define KEYCODE_HYPHEN_MINUS '-'

// Code point to indicate beginning-of-sentence. This is not in the code point space of unicode.

#define CODE_POINT_BEGINNING_OF_SENTENCE 0x110000

#define SUGGEST_INTERFACE_OUTPUT_SCALE 1000000.0f

#define MAX_PROBABILITY 255