Remove contact store functionality

Class loading of PGP functionality has never worked out of the box,
from which we can conclude that this feature is unused in the wild.

PGP functionality has never been located in bcprov-*.jar, at least as
long as the original library download configuration has existed.
3bccd773 points to bcprov-jdk16-144.jar, which does not contain PGP
classes:

  $ curl -sOL http://www.bouncycastle.org/download/bcprov-jdk16-144.jar && jar tf bcprov-jdk16-144.jar | grep -i pgp
  org/bouncycastle/crypto/modes/OpenPGPCFBBlockCipher.class
  org/bouncycastle/crypto/modes/PGPCFBBlockCipher.class

Even before that commit, in 44671f5c, we were checking for the
presence of PGPPublicKey.class in the havePGP() helper method.

This functionality at one point was used by Google to implement CLA
checking, but that used a different build system and so did not see
the breakage caused by incorrect library download configuration. These
days, Google does not even use the same contact store mechanism for
googlesource.com; CLAs are managed using a different system.

Also delete UI associated with storing contact information. Although
it was possible to configure a CLA to prompt the user for contact
information, looking at the logic in AccountSecurityImpl, this info
was dropped on the floor unless a ContactStore was configured. As we
know, this was never the case, so claiming to store encrypted contact
information in the UI was basically a lie.

Similarly, the contactFiledOn field in Account was only set in the
same ContactStore-enabled codepath, so we can kill that as well.

Change-Id: I497cd374566c7d56262dafeeb96e4612fee54e8f

gerrit-httpd/src/main/java/com/google/gerrit/httpd/rpc/account/AccountSecurityImpl.java

@@ -17,10 +17,8 @@ package com.google.gerrit.httpd.rpc.account;
 import com.google.common.base.Strings;
 import com.google.gerrit.audit.AuditService;
 import com.google.gerrit.common.ChangeHooks;
-import com.google.gerrit.common.TimeUtil;
 import com.google.gerrit.common.data.AccountSecurity;
 import com.google.gerrit.common.data.ContributorAgreement;
-import com.google.gerrit.common.errors.ContactInformationStoreException;
 import com.google.gerrit.common.errors.NoSuchEntityException;
 import com.google.gerrit.common.errors.PermissionDeniedException;
 import com.google.gerrit.httpd.rpc.BaseServiceImplementation;
@@ -28,7 +26,6 @@ import com.google.gerrit.reviewdb.client.Account;
 import com.google.gerrit.reviewdb.client.AccountExternalId;
 import com.google.gerrit.reviewdb.client.AccountGroup;
 import com.google.gerrit.reviewdb.client.AccountGroupMember;
-import com.google.gerrit.reviewdb.client.ContactInformation;
 import com.google.gerrit.reviewdb.server.ReviewDb;
 import com.google.gerrit.server.CurrentUser;
 import com.google.gerrit.server.IdentifiedUser;
@@ -36,7 +33,6 @@ import com.google.gerrit.server.account.AccountByEmailCache;
 import com.google.gerrit.server.account.AccountCache;
 import com.google.gerrit.server.account.GroupCache;
 import com.google.gerrit.server.account.Realm;
-import com.google.gerrit.server.contact.ContactStore;
 import com.google.gerrit.server.project.ProjectCache;
 import com.google.gwtjsonrpc.common.AsyncCallback;
 import com.google.gwtjsonrpc.common.VoidResult;
@@ -50,13 +46,11 @@ import java.util.Set;
 
 class AccountSecurityImpl extends BaseServiceImplementation implements
     AccountSecurity {
-  private final ContactStore contactStore;
   private final Realm realm;
   private final ProjectCache projectCache;
   private final Provider<IdentifiedUser> user;
   private final AccountByEmailCache byEmailCache;
   private final AccountCache accountCache;
-  private final boolean useContactInfo;
 
   private final DeleteExternalIds.Factory deleteExternalIdsFactory;
   private final ExternalIdDetailFactory.Factory externalIdDetailFactory;
@@ -67,7 +61,7 @@ class AccountSecurityImpl extends BaseServiceImplementation implements
 
   @Inject
   AccountSecurityImpl(final Provider<ReviewDb> schema,
-      final Provider<CurrentUser> currentUser, final ContactStore cs,
+      final Provider<CurrentUser> currentUser,
       final Realm r, final Provider<IdentifiedUser> u,
       final ProjectCache pc,
       final AccountByEmailCache abec, final AccountCache uac,
@@ -76,16 +70,12 @@ class AccountSecurityImpl extends BaseServiceImplementation implements
       final ChangeHooks hooks, final GroupCache groupCache,
       final AuditService auditService) {
     super(schema, currentUser);
-    contactStore = cs;
     realm = r;
     user = u;
     projectCache = pc;
     byEmailCache = abec;
     accountCache = uac;
     this.auditService = auditService;
-
-    useContactInfo = contactStore != null && contactStore.isEnabled();
-
     this.deleteExternalIdsFactory = deleteExternalIdsFactory;
     this.externalIdDetailFactory = externalIdDetailFactory;
     this.hooks = hooks;
@@ -105,7 +95,7 @@ class AccountSecurityImpl extends BaseServiceImplementation implements
 
   @Override
   public void updateContact(final String name, final String emailAddr,
-      final ContactInformation info, final AsyncCallback<Account> callback) {
+      final AsyncCallback<Account> callback) {
     run(callback, new Action<Account>() {
       @Override
       public Account run(ReviewDb db) throws OrmException, Failure {
@@ -120,19 +110,6 @@ class AccountSecurityImpl extends BaseServiceImplementation implements
           throw new Failure(new PermissionDeniedException("Email address must be verified"));
         }
         me.setPreferredEmail(Strings.emptyToNull(emailAddr));
-        if (useContactInfo) {
-          if (ContactInformation.hasAddress(info)
-              || (me.isContactFiled() && ContactInformation.hasData(info))) {
-            me.setContactFiled(TimeUtil.nowTs());
-          }
-          if (ContactInformation.hasData(info)) {
-            try {
-              contactStore.store(me, info);
-            } catch (ContactInformationStoreException e) {
-              throw new Failure(e);
-            }
-          }
-        }
         db.accounts().update(Collections.singleton(me));
         if (!eq(oldEmail, me.getPreferredEmail())) {
           byEmailCache.evict(oldEmail);