Merge branch 'stable-2.15'

* stable-2.15:
  Update git submodules
  Use Logger's built-in string formatting where possible
  Doc: Fix code example in JS API
  Allow some sections of the change list to overflow
  Fix more comparisons of current user
  Revert "WorkQueue: Add metrics"
  Fix permissions checks on Gerrit API on current user
  GroupCacheImpl: Fix log message when UUID is not found
  Update git submodules
  Update git submodules
  WorkQueue.Executor#buildMetrics: Remove MetricMaker parameter
  ChangeQueryBuilder: Allow ownerin predicate to be evaluated by the index
  Update git submodules
  Update git submodules
  Update git submodules
  ldap.Helper: Use local logger and make logger in LdapRealm private
  Remove ValidationError#createLoggerSink to avoid passing around loggers
  LdapLoginServlet: Improve exception handling
  OperatingSystemMXBeanProvider: Log exception for ReflectiveOperationException
  HttpPluginServlet: Don't trim leading whitespace from about.md content
  ProjectConfig: Don't use JGit's StringUtils to convert to lower case
  Do not abort indexing if < 50% projects failed
  Revert "AllChangesIndexer: Don't abort when failing to open repository"
  WorkQueue: Don't fail when queue metric already exists
  WorkQueue: Sanitize metric name when queue is created
  DropWizardMetricMaker: Introduce method to sanitize metric name
  VersionedAccountDestinations: Remove unused createSink(String) method
  ProjectBasicAuthFilter: Add comment why cause is not logged
  BazelBuild: Fix exception message when command was interrupted
  GitwebServlet: Write only one log entry for CGI errors
  GitwebServlet: Log unexpected errors on error level
  PostGpgKeys: Remove unneeded use of Joiner
  Remove some logs for errors that are rethrown
  DropWizardMetricMaker: Improve error messages for invalid arguments
  DropWizardMetricMaker: Improve error message when metric name is invalid
  AllChangesIndexer: Don't abort when failing to open repository

Change-Id: I33e8a1c9498c6adecd4ffc7d8ef0cc78aeb28eea

java/com/google/gerrit/server/CurrentUser.java

@@ -157,4 +157,17 @@ public abstract class CurrentUser {
   public Optional<ExternalId.Key> getLastLoginExternalIdKey() {
     return get(lastLoginExternalIdPropertyKey);
   }
+
+  /**
+   * Checks if the current user has the same account id of another.
+   *
+   * <p>Provide a generic interface for allowing subclasses to define whether two accounts represent
+   * the same account id.
+   *
+   * @param other user to compare
+   * @return true if the two users have the same account id
+   */
+  public boolean hasSameAccountId(CurrentUser other) {
+    return false;
+  }
 }