diff --git a/mobile/android/base/sync/repositories/android/FennecControlHelper.java b/mobile/android/base/sync/repositories/android/FennecControlHelper.java
new file mode 100644
index 000000000000..0402f6396415
--- /dev/null
+++ b/mobile/android/base/sync/repositories/android/FennecControlHelper.java
@@ -0,0 +1,131 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+package org.mozilla.gecko.sync.repositories.android;
+
+import org.mozilla.gecko.db.BrowserContract.Control;
+import org.mozilla.gecko.sync.Logger;
+import org.mozilla.gecko.sync.repositories.NoContentProviderException;
+
+import android.content.ContentProviderClient;
+import android.content.Context;
+import android.database.Cursor;
+import android.net.Uri;
+
+/**
+ * This class provides an interface to Fenec's control content provider, which
+ * exposes some of Fennec's internal state, particularly around migrations.
+ */
+public class FennecControlHelper {
+  private static final String LOG_TAG = "FennecControlHelper";
+
+  protected ContentProviderClient providerClient;
+  protected final RepoUtils.QueryHelper queryHelper;
+
+  public FennecControlHelper(Context context) throws NoContentProviderException {
+    providerClient = acquireContentProvider(context);
+    queryHelper = new RepoUtils.QueryHelper(context, Control.CONTENT_URI, LOG_TAG);
+  }
+
+  /**
+   * Acquire the content provider client.
+   * <p>
+   * The caller is responsible for releasing the client.
+   *
+   * @param context The application context.
+   * @return The <code>ContentProviderClient</code>. Never null.
+   * @throws NoContentProviderException
+   */
+  public static ContentProviderClient acquireContentProvider(final Context context)
+      throws NoContentProviderException {
+    final Uri uri = Control.CONTENT_URI;
+    final ContentProviderClient client = context.getContentResolver().acquireContentProviderClient(uri);
+    if (client == null) {
+      throw new NoContentProviderException(uri);
+    }
+    return client;
+  }
+
+  /**
+   * After invoking this method, this instance should be discarded.
+   */
+  public void releaseProviders() {
+    try {
+      if (providerClient != null) {
+        providerClient.release();
+      }
+    } catch (Exception e) {
+    }
+    providerClient = null;
+  }
+
+  @Override
+  protected void finalize() throws Throwable {
+    this.releaseProviders();
+    super.finalize();
+  }
+
+  private static String[] HISTORY_MIGRATION_COLUMNS = new String[] { Control.ENSURE_HISTORY_MIGRATED };
+  private static String[] BOOKMARKS_MIGRATION_COLUMNS = new String[] { Control.ENSURE_BOOKMARKS_MIGRATED };
+
+  /**
+   * Pass in a unit array. Returns true if the named column is
+   * finished migrating; false otherwise.
+   *
+   * @param columns an array of a single string, which should be one of the
+   *                permitted control values.
+   * @return true if the named column is finished migrating; false otherwise.
+   */
+  protected boolean isColumnMigrated(final String[] columns) {
+    try {
+      final Cursor cursor = queryHelper.safeQuery(providerClient, ".isColumnMigrated(" + columns[0] + ")",
+                                                  columns, null, null, null);
+      try {
+        if (!cursor.moveToFirst()) {
+          return false;
+        }
+
+        // This is why we require a unit array.
+        return cursor.getInt(0) > 0;
+      } finally {
+        cursor.close();
+      }
+    } catch (Exception e) {
+      Logger.warn(LOG_TAG, "Caught exception checking if Fennec has migrated column " + columns[0] + ".", e);
+      return false;
+    }
+  }
+
+  /**
+   * @param context the context to use when querying.
+   * @param columns an array of a single string, which should be one of the
+   *                permitted control values.
+   * @return true if the named column is finished migrating; false otherwise.
+   */
+  protected static boolean isColumnMigrated(Context context, String[] columns) {
+    if (context == null) {
+      return false;
+    }
+
+    try {
+      final FennecControlHelper control = new FennecControlHelper(context);
+      try {
+        return control.isColumnMigrated(columns);
+      } finally {
+        control.releaseProviders();
+      }
+    } catch (Exception e) {
+      Logger.warn(LOG_TAG, "Caught exception checking if Fennec has migrated column " + columns[0] + ".", e);
+      return false;
+    }
+  }
+
+  public static boolean isHistoryMigrated(Context context) {
+    return isColumnMigrated(context, HISTORY_MIGRATION_COLUMNS);
+  }
+
+  public static boolean areBookmarksMigrated(Context context) {
+    return isColumnMigrated(context, BOOKMARKS_MIGRATION_COLUMNS);
+  }
+}
diff --git a/mobile/android/base/sync/stage/AndroidBrowserBookmarksServerSyncStage.java b/mobile/android/base/sync/stage/AndroidBrowserBookmarksServerSyncStage.java
index be0697f01fc1..d9561b38e50a 100644
--- a/mobile/android/base/sync/stage/AndroidBrowserBookmarksServerSyncStage.java
+++ b/mobile/android/base/sync/stage/AndroidBrowserBookmarksServerSyncStage.java
@@ -39,13 +39,17 @@ package org.mozilla.gecko.sync.stage;
 
 import java.net.URISyntaxException;
 
+import org.mozilla.gecko.sync.Logger;
+import org.mozilla.gecko.sync.MetaGlobalException;
 import org.mozilla.gecko.sync.repositories.ConstrainedServer11Repository;
 import org.mozilla.gecko.sync.repositories.RecordFactory;
 import org.mozilla.gecko.sync.repositories.Repository;
 import org.mozilla.gecko.sync.repositories.android.AndroidBrowserBookmarksRepository;
+import org.mozilla.gecko.sync.repositories.android.FennecControlHelper;
 import org.mozilla.gecko.sync.repositories.domain.BookmarkRecordFactory;
 
 public class AndroidBrowserBookmarksServerSyncStage extends ServerSyncStage {
+  protected static final String LOG_TAG = "BookmarksStage";
 
   // Eventually this kind of sync stage will be data-driven,
   // and all this hard-coding can go away.
@@ -80,4 +84,16 @@ public class AndroidBrowserBookmarksServerSyncStage extends ServerSyncStage {
   protected RecordFactory getRecordFactory() {
     return new BookmarkRecordFactory();
   }
+
+  @Override
+  protected boolean isEnabled() throws MetaGlobalException {
+    if (session == null || session.getContext() == null) {
+      return false;
+    }
+    boolean migrated = FennecControlHelper.areBookmarksMigrated(session.getContext());
+    if (!migrated) {
+      Logger.warn(LOG_TAG, "Not enabling bookmarks engine since Fennec bookmarks are not migrated.");
+    }
+    return super.isEnabled() && migrated;
+  }
 }
\ No newline at end of file
diff --git a/mobile/android/base/sync/stage/AndroidBrowserHistoryServerSyncStage.java b/mobile/android/base/sync/stage/AndroidBrowserHistoryServerSyncStage.java
index 13bdc81dde62..eb46949535e2 100644
--- a/mobile/android/base/sync/stage/AndroidBrowserHistoryServerSyncStage.java
+++ b/mobile/android/base/sync/stage/AndroidBrowserHistoryServerSyncStage.java
@@ -39,13 +39,17 @@ package org.mozilla.gecko.sync.stage;
 
 import java.net.URISyntaxException;
 
+import org.mozilla.gecko.sync.Logger;
+import org.mozilla.gecko.sync.MetaGlobalException;
 import org.mozilla.gecko.sync.repositories.ConstrainedServer11Repository;
 import org.mozilla.gecko.sync.repositories.RecordFactory;
 import org.mozilla.gecko.sync.repositories.Repository;
 import org.mozilla.gecko.sync.repositories.android.AndroidBrowserHistoryRepository;
+import org.mozilla.gecko.sync.repositories.android.FennecControlHelper;
 import org.mozilla.gecko.sync.repositories.domain.HistoryRecordFactory;
 
 public class AndroidBrowserHistoryServerSyncStage extends ServerSyncStage {
+  protected static final String LOG_TAG = "HistoryStage";
 
   // Eventually this kind of sync stage will be data-driven,
   // and all this hard-coding can go away.
@@ -80,4 +84,16 @@ public class AndroidBrowserHistoryServerSyncStage extends ServerSyncStage {
   protected RecordFactory getRecordFactory() {
     return new HistoryRecordFactory();
   }
-}
\ No newline at end of file
+
+  @Override
+  protected boolean isEnabled() throws MetaGlobalException {
+    if (session == null || session.getContext() == null) {
+      return false;
+    }
+    boolean migrated = FennecControlHelper.isHistoryMigrated(session.getContext());
+    if (!migrated) {
+      Logger.warn(LOG_TAG, "Not enabling history engine since Fennec history is not migrated.");
+    }
+    return super.isEnabled() && migrated;
+  }
+}
diff --git a/mobile/android/sync/java-sources.mn b/mobile/android/sync/java-sources.mn
index 2ab525559ee7..93d4207fdb6d 100644
--- a/mobile/android/sync/java-sources.mn
+++ b/mobile/android/sync/java-sources.mn
@@ -1 +1 @@
-sync/AlreadySyncingException.java sync/CollectionKeys.java sync/CommandProcessor.java sync/CommandRunner.java sync/CredentialsSource.java sync/crypto/CryptoException.java sync/crypto/CryptoInfo.java sync/crypto/HKDF.java sync/crypto/HMACVerificationException.java sync/crypto/KeyBundle.java sync/crypto/MissingCryptoInputException.java sync/crypto/NoKeyBundleException.java sync/crypto/PersistedCrypto5Keys.java sync/CryptoRecord.java sync/DelayedWorkTracker.java sync/delegates/ClientsDataDelegate.java sync/delegates/FreshStartDelegate.java sync/delegates/GlobalSessionCallback.java sync/delegates/InfoCollectionsDelegate.java sync/delegates/KeyUploadDelegate.java sync/delegates/MetaGlobalDelegate.java sync/delegates/WipeServerDelegate.java sync/ExtendedJSONObject.java sync/GlobalSession.java sync/HTTPFailureException.java sync/InfoCollections.java sync/jpake/BigIntegerHelper.java sync/jpake/Gx3OrGx4IsZeroOrOneException.java sync/jpake/IncorrectZkpException.java sync/jpake/JPakeClient.java sync/jpake/JPakeCrypto.java sync/jpake/JPakeJson.java sync/jpake/JPakeNoActivePairingException.java sync/jpake/JPakeNumGenerator.java sync/jpake/JPakeNumGeneratorRandom.java sync/jpake/JPakeParty.java sync/jpake/JPakeRequest.java sync/jpake/JPakeRequestDelegate.java sync/jpake/JPakeResponse.java sync/jpake/stage/CompleteStage.java sync/jpake/stage/ComputeFinalStage.java sync/jpake/stage/ComputeKeyVerificationStage.java sync/jpake/stage/ComputeStepOneStage.java sync/jpake/stage/ComputeStepTwoStage.java sync/jpake/stage/DecryptDataStage.java sync/jpake/stage/DeleteChannel.java sync/jpake/stage/GetChannelStage.java sync/jpake/stage/GetRequestStage.java sync/jpake/stage/JPakeStage.java sync/jpake/stage/PutRequestStage.java sync/jpake/stage/VerifyPairingStage.java sync/jpake/Zkp.java sync/KeyBundleProvider.java sync/Logger.java sync/MetaGlobal.java sync/MetaGlobalException.java sync/MetaGlobalMissingEnginesException.java sync/MetaGlobalNotSetException.java sync/middleware/Crypto5MiddlewareRepository.java sync/middleware/Crypto5MiddlewareRepositorySession.java sync/middleware/MiddlewareRepository.java sync/middleware/MiddlewareRepositorySession.java sync/net/BaseResource.java sync/net/CompletedEntity.java sync/net/ConnectionMonitorThread.java sync/net/HandleProgressException.java sync/net/HttpResponseObserver.java sync/net/Resource.java sync/net/ResourceDelegate.java sync/net/SyncResourceDelegate.java sync/net/SyncResponse.java sync/net/SyncStorageCollectionRequest.java sync/net/SyncStorageCollectionRequestDelegate.java sync/net/SyncStorageRecordRequest.java sync/net/SyncStorageRequest.java sync/net/SyncStorageRequestDelegate.java sync/net/SyncStorageRequestIncrementalDelegate.java sync/net/SyncStorageResponse.java sync/net/TLSSocketFactory.java sync/net/WBOCollectionRequestDelegate.java sync/net/WBORequestDelegate.java sync/NoCollectionKeysSetException.java sync/NodeAuthenticationException.java sync/NonArrayJSONException.java sync/NonObjectJSONException.java sync/NullClusterURLException.java sync/PersistedMetaGlobal.java sync/PrefsSource.java sync/repositories/android/AndroidBrowserBookmarksDataAccessor.java sync/repositories/android/AndroidBrowserBookmarksRepository.java sync/repositories/android/AndroidBrowserBookmarksRepositorySession.java sync/repositories/android/AndroidBrowserHistoryDataAccessor.java sync/repositories/android/AndroidBrowserHistoryDataExtender.java sync/repositories/android/AndroidBrowserHistoryRepository.java sync/repositories/android/AndroidBrowserHistoryRepositorySession.java sync/repositories/android/AndroidBrowserRepository.java sync/repositories/android/AndroidBrowserRepositoryDataAccessor.java sync/repositories/android/AndroidBrowserRepositorySession.java sync/repositories/android/BookmarksDeletionManager.java sync/repositories/android/BrowserContractHelpers.java sync/repositories/android/CachedSQLiteOpenHelper.java sync/repositories/android/ClientsDatabase.java sync/repositories/android/ClientsDatabaseAccessor.java sync/repositories/android/FennecTabsRepository.java sync/repositories/android/FormHistoryRepositorySession.java sync/repositories/android/PasswordsRepositorySession.java sync/repositories/android/RepoUtils.java sync/repositories/BookmarkNeedsReparentingException.java sync/repositories/BookmarksRepository.java sync/repositories/ConstrainedServer11Repository.java sync/repositories/delegates/DeferrableRepositorySessionCreationDelegate.java sync/repositories/delegates/DeferredRepositorySessionBeginDelegate.java sync/repositories/delegates/DeferredRepositorySessionFetchRecordsDelegate.java sync/repositories/delegates/DeferredRepositorySessionFinishDelegate.java sync/repositories/delegates/DeferredRepositorySessionStoreDelegate.java sync/repositories/delegates/RepositorySessionBeginDelegate.java sync/repositories/delegates/RepositorySessionCleanDelegate.java sync/repositories/delegates/RepositorySessionCreationDelegate.java sync/repositories/delegates/RepositorySessionFetchRecordsDelegate.java sync/repositories/delegates/RepositorySessionFinishDelegate.java sync/repositories/delegates/RepositorySessionGuidsSinceDelegate.java sync/repositories/delegates/RepositorySessionStoreDelegate.java sync/repositories/delegates/RepositorySessionWipeDelegate.java sync/repositories/domain/BookmarkRecord.java sync/repositories/domain/BookmarkRecordFactory.java sync/repositories/domain/ClientRecord.java sync/repositories/domain/ClientRecordFactory.java sync/repositories/domain/FormHistoryRecord.java sync/repositories/domain/HistoryRecord.java sync/repositories/domain/HistoryRecordFactory.java sync/repositories/domain/PasswordRecord.java sync/repositories/domain/Record.java sync/repositories/domain/TabsRecord.java sync/repositories/HashSetStoreTracker.java sync/repositories/HistoryRepository.java sync/repositories/IdentityRecordFactory.java sync/repositories/InactiveSessionException.java sync/repositories/InvalidBookmarkTypeException.java sync/repositories/InvalidRequestException.java sync/repositories/InvalidSessionTransitionException.java sync/repositories/MultipleRecordsForGuidException.java sync/repositories/NoContentProviderException.java sync/repositories/NoGuidForIdException.java sync/repositories/NoStoreDelegateException.java sync/repositories/NullCursorException.java sync/repositories/ParentNotFoundException.java sync/repositories/ProfileDatabaseException.java sync/repositories/RecordFactory.java sync/repositories/RecordFilter.java sync/repositories/Repository.java sync/repositories/RepositorySession.java sync/repositories/RepositorySessionBundle.java sync/repositories/Server11Repository.java sync/repositories/Server11RepositorySession.java sync/repositories/StoreTracker.java sync/repositories/StoreTrackingRepositorySession.java sync/setup/activities/AccountActivity.java sync/setup/activities/ActivityUtils.java sync/setup/activities/SetupFailureActivity.java sync/setup/activities/SetupSuccessActivity.java sync/setup/activities/SetupSyncActivity.java sync/setup/Constants.java sync/setup/InvalidSyncKeyException.java sync/setup/SyncAccounts.java sync/setup/SyncAuthenticatorService.java sync/stage/AndroidBrowserBookmarksServerSyncStage.java sync/stage/AndroidBrowserHistoryServerSyncStage.java sync/stage/CheckPreconditionsStage.java sync/stage/CompletedStage.java sync/stage/EnsureClusterURLStage.java sync/stage/EnsureCrypto5KeysStage.java sync/stage/FennecTabsServerSyncStage.java sync/stage/FetchInfoCollectionsStage.java sync/stage/FetchMetaGlobalStage.java sync/stage/FormHistoryServerSyncStage.java sync/stage/GlobalSyncStage.java sync/stage/NoSuchStageException.java sync/stage/NoSyncIDException.java sync/stage/PasswordsServerSyncStage.java sync/stage/ServerSyncStage.java sync/stage/SyncClientsEngineStage.java sync/StubActivity.java sync/syncadapter/SyncAdapter.java sync/syncadapter/SyncService.java sync/SyncConfiguration.java sync/SyncConfigurationException.java sync/SyncException.java sync/synchronizer/ConcurrentRecordConsumer.java sync/synchronizer/RecordConsumer.java sync/synchronizer/RecordsChannel.java sync/synchronizer/RecordsChannelDelegate.java sync/synchronizer/RecordsConsumerDelegate.java sync/synchronizer/SerialRecordConsumer.java sync/synchronizer/SessionNotBegunException.java sync/synchronizer/Synchronizer.java sync/synchronizer/SynchronizerDelegate.java sync/synchronizer/SynchronizerSession.java sync/synchronizer/SynchronizerSessionDelegate.java sync/synchronizer/UnbundleError.java sync/synchronizer/UnexpectedSessionException.java sync/SynchronizerConfiguration.java sync/SynchronizerConfigurations.java sync/ThreadPool.java sync/UnexpectedJSONException.java sync/UnknownSynchronizerConfigurationVersionException.java sync/Utils.java
+sync/AlreadySyncingException.java sync/CollectionKeys.java sync/CommandProcessor.java sync/CommandRunner.java sync/CredentialsSource.java sync/crypto/CryptoException.java sync/crypto/CryptoInfo.java sync/crypto/HKDF.java sync/crypto/HMACVerificationException.java sync/crypto/KeyBundle.java sync/crypto/MissingCryptoInputException.java sync/crypto/NoKeyBundleException.java sync/crypto/PersistedCrypto5Keys.java sync/CryptoRecord.java sync/DelayedWorkTracker.java sync/delegates/ClientsDataDelegate.java sync/delegates/FreshStartDelegate.java sync/delegates/GlobalSessionCallback.java sync/delegates/InfoCollectionsDelegate.java sync/delegates/KeyUploadDelegate.java sync/delegates/MetaGlobalDelegate.java sync/delegates/WipeServerDelegate.java sync/ExtendedJSONObject.java sync/GlobalSession.java sync/HTTPFailureException.java sync/InfoCollections.java sync/jpake/BigIntegerHelper.java sync/jpake/Gx3OrGx4IsZeroOrOneException.java sync/jpake/IncorrectZkpException.java sync/jpake/JPakeClient.java sync/jpake/JPakeCrypto.java sync/jpake/JPakeJson.java sync/jpake/JPakeNoActivePairingException.java sync/jpake/JPakeNumGenerator.java sync/jpake/JPakeNumGeneratorRandom.java sync/jpake/JPakeParty.java sync/jpake/JPakeRequest.java sync/jpake/JPakeRequestDelegate.java sync/jpake/JPakeResponse.java sync/jpake/stage/CompleteStage.java sync/jpake/stage/ComputeFinalStage.java sync/jpake/stage/ComputeKeyVerificationStage.java sync/jpake/stage/ComputeStepOneStage.java sync/jpake/stage/ComputeStepTwoStage.java sync/jpake/stage/DecryptDataStage.java sync/jpake/stage/DeleteChannel.java sync/jpake/stage/GetChannelStage.java sync/jpake/stage/GetRequestStage.java sync/jpake/stage/JPakeStage.java sync/jpake/stage/PutRequestStage.java sync/jpake/stage/VerifyPairingStage.java sync/jpake/Zkp.java sync/KeyBundleProvider.java sync/Logger.java sync/MetaGlobal.java sync/MetaGlobalException.java sync/MetaGlobalMissingEnginesException.java sync/MetaGlobalNotSetException.java sync/middleware/Crypto5MiddlewareRepository.java sync/middleware/Crypto5MiddlewareRepositorySession.java sync/middleware/MiddlewareRepository.java sync/middleware/MiddlewareRepositorySession.java sync/net/BaseResource.java sync/net/CompletedEntity.java sync/net/ConnectionMonitorThread.java sync/net/HandleProgressException.java sync/net/HttpResponseObserver.java sync/net/Resource.java sync/net/ResourceDelegate.java sync/net/SyncResourceDelegate.java sync/net/SyncResponse.java sync/net/SyncStorageCollectionRequest.java sync/net/SyncStorageCollectionRequestDelegate.java sync/net/SyncStorageRecordRequest.java sync/net/SyncStorageRequest.java sync/net/SyncStorageRequestDelegate.java sync/net/SyncStorageRequestIncrementalDelegate.java sync/net/SyncStorageResponse.java sync/net/TLSSocketFactory.java sync/net/WBOCollectionRequestDelegate.java sync/net/WBORequestDelegate.java sync/NoCollectionKeysSetException.java sync/NodeAuthenticationException.java sync/NonArrayJSONException.java sync/NonObjectJSONException.java sync/NullClusterURLException.java sync/PersistedMetaGlobal.java sync/PrefsSource.java sync/repositories/android/AndroidBrowserBookmarksDataAccessor.java sync/repositories/android/AndroidBrowserBookmarksRepository.java sync/repositories/android/AndroidBrowserBookmarksRepositorySession.java sync/repositories/android/AndroidBrowserHistoryDataAccessor.java sync/repositories/android/AndroidBrowserHistoryDataExtender.java sync/repositories/android/AndroidBrowserHistoryRepository.java sync/repositories/android/AndroidBrowserHistoryRepositorySession.java sync/repositories/android/AndroidBrowserRepository.java sync/repositories/android/AndroidBrowserRepositoryDataAccessor.java sync/repositories/android/AndroidBrowserRepositorySession.java sync/repositories/android/BookmarksDeletionManager.java sync/repositories/android/BrowserContractHelpers.java sync/repositories/android/CachedSQLiteOpenHelper.java sync/repositories/android/ClientsDatabase.java sync/repositories/android/ClientsDatabaseAccessor.java sync/repositories/android/FennecControlHelper.java sync/repositories/android/FennecTabsRepository.java sync/repositories/android/FormHistoryRepositorySession.java sync/repositories/android/PasswordsRepositorySession.java sync/repositories/android/RepoUtils.java sync/repositories/BookmarkNeedsReparentingException.java sync/repositories/BookmarksRepository.java sync/repositories/ConstrainedServer11Repository.java sync/repositories/delegates/DeferrableRepositorySessionCreationDelegate.java sync/repositories/delegates/DeferredRepositorySessionBeginDelegate.java sync/repositories/delegates/DeferredRepositorySessionFetchRecordsDelegate.java sync/repositories/delegates/DeferredRepositorySessionFinishDelegate.java sync/repositories/delegates/DeferredRepositorySessionStoreDelegate.java sync/repositories/delegates/RepositorySessionBeginDelegate.java sync/repositories/delegates/RepositorySessionCleanDelegate.java sync/repositories/delegates/RepositorySessionCreationDelegate.java sync/repositories/delegates/RepositorySessionFetchRecordsDelegate.java sync/repositories/delegates/RepositorySessionFinishDelegate.java sync/repositories/delegates/RepositorySessionGuidsSinceDelegate.java sync/repositories/delegates/RepositorySessionStoreDelegate.java sync/repositories/delegates/RepositorySessionWipeDelegate.java sync/repositories/domain/BookmarkRecord.java sync/repositories/domain/BookmarkRecordFactory.java sync/repositories/domain/ClientRecord.java sync/repositories/domain/ClientRecordFactory.java sync/repositories/domain/FormHistoryRecord.java sync/repositories/domain/HistoryRecord.java sync/repositories/domain/HistoryRecordFactory.java sync/repositories/domain/PasswordRecord.java sync/repositories/domain/Record.java sync/repositories/domain/TabsRecord.java sync/repositories/HashSetStoreTracker.java sync/repositories/HistoryRepository.java sync/repositories/IdentityRecordFactory.java sync/repositories/InactiveSessionException.java sync/repositories/InvalidBookmarkTypeException.java sync/repositories/InvalidRequestException.java sync/repositories/InvalidSessionTransitionException.java sync/repositories/MultipleRecordsForGuidException.java sync/repositories/NoContentProviderException.java sync/repositories/NoGuidForIdException.java sync/repositories/NoStoreDelegateException.java sync/repositories/NullCursorException.java sync/repositories/ParentNotFoundException.java sync/repositories/ProfileDatabaseException.java sync/repositories/RecordFactory.java sync/repositories/RecordFilter.java sync/repositories/Repository.java sync/repositories/RepositorySession.java sync/repositories/RepositorySessionBundle.java sync/repositories/Server11Repository.java sync/repositories/Server11RepositorySession.java sync/repositories/StoreTracker.java sync/repositories/StoreTrackingRepositorySession.java sync/setup/activities/AccountActivity.java sync/setup/activities/ActivityUtils.java sync/setup/activities/SetupFailureActivity.java sync/setup/activities/SetupSuccessActivity.java sync/setup/activities/SetupSyncActivity.java sync/setup/Constants.java sync/setup/InvalidSyncKeyException.java sync/setup/SyncAccounts.java sync/setup/SyncAuthenticatorService.java sync/stage/AndroidBrowserBookmarksServerSyncStage.java sync/stage/AndroidBrowserHistoryServerSyncStage.java sync/stage/CheckPreconditionsStage.java sync/stage/CompletedStage.java sync/stage/EnsureClusterURLStage.java sync/stage/EnsureCrypto5KeysStage.java sync/stage/FennecTabsServerSyncStage.java sync/stage/FetchInfoCollectionsStage.java sync/stage/FetchMetaGlobalStage.java sync/stage/FormHistoryServerSyncStage.java sync/stage/GlobalSyncStage.java sync/stage/NoSuchStageException.java sync/stage/NoSyncIDException.java sync/stage/PasswordsServerSyncStage.java sync/stage/ServerSyncStage.java sync/stage/SyncClientsEngineStage.java sync/StubActivity.java sync/syncadapter/SyncAdapter.java sync/syncadapter/SyncService.java sync/SyncConfiguration.java sync/SyncConfigurationException.java sync/SyncException.java sync/synchronizer/ConcurrentRecordConsumer.java sync/synchronizer/RecordConsumer.java sync/synchronizer/RecordsChannel.java sync/synchronizer/RecordsChannelDelegate.java sync/synchronizer/RecordsConsumerDelegate.java sync/synchronizer/SerialRecordConsumer.java sync/synchronizer/SessionNotBegunException.java sync/synchronizer/Synchronizer.java sync/synchronizer/SynchronizerDelegate.java sync/synchronizer/SynchronizerSession.java sync/synchronizer/SynchronizerSessionDelegate.java sync/synchronizer/UnbundleError.java sync/synchronizer/UnexpectedSessionException.java sync/SynchronizerConfiguration.java sync/SynchronizerConfigurations.java sync/ThreadPool.java sync/UnexpectedJSONException.java sync/UnknownSynchronizerConfigurationVersionException.java sync/Utils.java