package io.github.trevornelson;

/**
 * Contains the client IDs and scopes for allowed clients consuming the helloworld API.
 */
public class Constants {
  public static final String WEB_CLIENT_ID = "99492469869-a8phf2icj5576p0a1or8v25djbqlb32k.apps.googleusercontent.com";
  public static final String ANDROID_CLIENT_ID = "replace this with your Android client ID";
  public static final String IOS_CLIENT_ID = "replace this with your iOS client ID";
  public static final String ANDROID_AUDIENCE = WEB_CLIENT_ID;

  public static final String EMAIL_SCOPE = "https://www.googleapis.com/auth/userinfo.email";
}

package io.github.trevornelson;

public class Constants {
  public static final String WEB_CLIENT_ID = "99492469869-a8phf2icj5576p0a1or8v25djbqlb32k.apps.googleusercontent.com";
  public static final String ANDROID_CLIENT_ID = "replace this with your Android client ID";
  public static final String IOS_CLIENT_ID = "replace this with your iOS client ID";
  public static final String ANDROID_AUDIENCE = WEB_CLIENT_ID;

  public static final String EMAIL_SCOPE = "https://www.googleapis.com/auth/userinfo.email";
  public static final String ANALYTICS_SCOPE = "https://www.googleapis.com/auth/analytics.readonly";
}

Add ANALYTICS_SCOPE constant to constants file