[Sync] Initial implementation of foreign sessions suggestions provider.

chrome/browser/prefs/browser_prefs.cc

Index: chrome/browser/prefs/browser_prefs.cc
diff --git a/chrome/browser/prefs/browser_prefs.cc b/chrome/browser/prefs/browser_prefs.cc
index 0035f4b03bc16242c121a18b39f53957c0b815f3..a409a3853765fb7043f9b6e3730332ec0ce1abf5 100644
--- a/chrome/browser/prefs/browser_prefs.cc
+++ b/chrome/browser/prefs/browser_prefs.cc
@@ -80,6 +80,7 @@
 #include "components/ntp_snippets/bookmarks/bookmark_suggestions_provider.h"
 #include "components/ntp_snippets/ntp_snippets_service.h"
 #include "components/ntp_snippets/request_throttler.h"
+#include "components/ntp_snippets/sessions/foreign_sessions_suggestions_provider.h"
 #include "components/ntp_snippets/user_classifier.h"
 #include "components/omnibox/browser/zero_suggest_provider.h"
 #include "components/password_manager/core/browser/password_bubble_experiment.h"
@@ -476,6 +477,8 @@ void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry) {
   MediaDeviceIDSalt::RegisterProfilePrefs(registry);
   MediaStreamDevicesController::RegisterProfilePrefs(registry);
   ntp_snippets::BookmarkSuggestionsProvider::RegisterProfilePrefs(registry);
+  ntp_snippets::ForeignSessionsSuggestionsProvider::RegisterProfilePrefs(
+      registry);
   ntp_snippets::NTPSnippetsService::RegisterProfilePrefs(registry);
   ntp_snippets::RequestThrottler::RegisterProfilePrefs(registry);
   ntp_snippets::UserClassifier::RegisterProfilePrefs(registry);