[iOS] Register UnifiedConsentServiceFactory

Bug: 908123
Change-Id: I721da9b87f677f4e68c255537dd67436d5316721
Reviewed-on: https://chromium-review.googlesource.com/c/1349655Reviewed-by: Thomas Tangl <tangltom@chromium.org>
Commit-Queue: David Roger <droger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#610804}

ios/chrome/browser/browser_state/browser_state_keyed_service_factories.mm

@@ -59,6 +59,7 @@
 #include "ios/chrome/browser/ui/fullscreen/fullscreen_controller_factory.h"
 #import "ios/chrome/browser/ui/voice/text_to_speech_playback_controller_factory.h"
 #include "ios/chrome/browser/undo/bookmark_undo_service_factory.h"
+#include "ios/chrome/browser/unified_consent/unified_consent_service_factory.h"
 #include "ios/chrome/browser/web_data_service_factory.h"
 #import "ios/chrome/browser/web_state_list/web_usage_enabler/web_state_list_web_usage_enabler_factory.h"
 
@@ -127,6 +128,7 @@ void EnsureBrowserStateKeyedServiceFactoriesBuilt() {
   SyncSetupServiceFactory::GetInstance();
   TabRestoreServiceDelegateImplIOSFactory::GetInstance();
   TranslateAcceptLanguagesFactory::GetInstance();
+  UnifiedConsentServiceFactory::GetInstance();
   UrlLanguageHistogramFactory::GetInstance();
   BrowserDownloadServiceFactory::GetInstance();
   FullscreenControllerFactory::GetInstance();