Scan Optimization: Proto change for device mobility state PNO scan stats

  // Counts the occurrences of each Wifi usability score provided by external app

  repeated WifiUsabilityScoreCount wifi_usability_score_count = 127;

  // List of PNO scan stats, one element for each mobility state

  repeated DeviceMobilityStatePnoScanStats mobility_state_pno_stats_list = 128;

}

// Information that gets logged for every WiFi connection.

  // The list of timestamped wifi usability stats

  repeated WifiUsabilityStatsEntry stats = 2;

}

message DeviceMobilityStatePnoScanStats {

  // see WifiManager.DEVICE_MOBILITY_STATE_* constants

  enum DeviceMobilityState {

    // Unknown mobility

    UNKNOWN = 0;

    // High movement

    HIGH_MVMT = 1;

    // Low movement

    LOW_MVMT = 2;

    // Stationary

    STATIONARY = 3;

  }

  // The device mobility state

  optional DeviceMobilityState device_mobility_state = 1;

  // The number of times that this state was entered

  optional int32 num_times_entered_state = 2;

  // The total duration elapsed while in this mobility state, in ms

  optional int64 total_duration_ms = 3;

  // the total duration elapsed while in this mobility state with PNO scans running, in ms

  optional int64 pno_duration_ms = 4;

}