wifi.proto: Add metrics for new API surface

  // List of NetworkSelectionExperimentDecisions stats for each experiment

  repeated NetworkSelectionExperimentDecisions network_selection_experiment_decisions_list = 140;

  // Network Request API surface metrics.

  optional WifiNetworkRequestApiLog wifi_network_request_api_log = 141;

  // Network Suggestion API surface metrics.

  optional WifiNetworkSuggestionApiLog wifi_network_suggestion_api_log = 142;

}

// Information that gets logged for every WiFi connection.

  // a single network choice, since choosing not to connect to that network is a valid choice.

  repeated MapEntryInt32Int32 different_selection_num_choices_counter = 4;

}

// NetworkRequest API metrics.

message WifiNetworkRequestApiLog {

  // Number of requests via this API surface.

  optional int32 num_request = 1;

  // Histogram of requests via this API surface to number of networks matched in scan results.

  optional HistogramBucketInt32 network_match_size_histogram = 2;

  // Number of successful network connection from this API.

  optional int32 num_connect_success = 3;

  // Number of requests via this API surface that bypassed user approval.

  optional int32 num_user_approval_bypass = 4;

  // Number of requests via this API surface that was rejected by the user.

  optional int32 num_user_reject = 5;

  // Number of unique apps using this API surface.

  optional int32 num_apps = 6;

}

// NetworkSuggestion API metrics.

message WifiNetworkSuggestionApiLog {

  // Number of modifications to their suggestions by apps.

  optional int32 num_modification = 1;

  // Number of successful network connection from app suggestions.

  optional int32 num_connect_success = 2;

  // Number of network connection failures from app suggestions.

  optional int32 num_connect_failure = 3;

  // Histogram for size of the network lists provided by various apps on the device.

  repeated HistogramBucketInt32 network_list_size_histogram = 4;

}