Fixes History page keeps on loading when signed in with Passphrase

ios/chrome/browser/ui/history/history_collection_view_controller.mm

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ios/chrome/browser/ui/history/history_collection_view_controller.h"
 
 #import <MobileCoreServices/MobileCoreServices.h>
 
 #include <memory>
 
@@ skipping 311 matching lines @@
 
 - (void)historyServiceFacade:(HistoryServiceFacade*)facade
        didReceiveQueryResult:(HistoryServiceFacade::QueryResult)result {
   self.loading = NO;
   // If history sync is enabled and there hasn't been a response from synced
   // history, try fetching again.
   SyncSetupService* syncSetupService =
       SyncSetupServiceFactory::GetForBrowserState(_browserState);
   if (syncSetupService->IsSyncEnabled() &&
       syncSetupService->IsDataTypeEnabled(syncer::HISTORY_DELETE_DIRECTIVES) &&
-      !result.sync_returned) {
+      !result.sync_returned &&
+      // TODO(ramyasharma): Remove this check when sync bug is fixed.

[sczs, 2017/03/31 15:58:01]

Please use format TODO(crbug.com/####): as in
https://sites.google.com/a/google.com/bling/engineering/workflow/style-guide?...

[ramyasharma, 2017/04/04 01:44:06]

Done.

+      // HISTORY_DELETE_DIRECTIVES should be disabled when passphrase is
+      // enabled. See crbug/679347.
+      !syncSetupService->IsSecondaryPassphraseEnabled()) {
     [self showHistoryMatchingQuery:_currentQuery];
     return;
   }
 
   // If there are no results and no URLs have been loaded, report that no
   // history entries were found.
   if (result.entries.empty() && !self.hasHistoryEntries) {
     DCHECK(self.entriesType == NO_ENTRIES);
     [self updateEntriesStatusMessage];
     [self.delegate historyCollectionViewControllerDidChangeEntries:self];
@@ skipping 456 matching lines @@
                          [self.URLLoader webPageOrderedOpen:copiedURL
                                                    referrer:web::Referrer()
                                                  windowName:nil
                                                 inIncognito:YES
                                                inBackground:NO
                                                    appendTo:kLastTab];
                        }];
 }
 
 @end