[Invalidations] Avoid usages of syncer namespace

Significant part of components/invalidation was under syncer namespace,
while other part was under invalidation namespace. This CL makes
components/invalidation content consistently using invalidation
namespace.

This CL is a pure refactoring.

Bug: 1031125
Change-Id: I37614c39c79b05cca457a2f8619d1f5bfdf1546d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2617850
Reviewed-by: Marc Treib <[email protected]>
Reviewed-by: David Roger <[email protected]>
Reviewed-by: Ryo Hashimoto <[email protected]>
Commit-Queue: Maksim Moskvitin <[email protected]>
Cr-Commit-Position: refs/heads/master@{#842486}
diff --git a/chrome/browser/prefs/browser_prefs.cc b/chrome/browser/prefs/browser_prefs.cc
index 171c537..362a8e8 100644
--- a/chrome/browser/prefs/browser_prefs.cc
+++ b/chrome/browser/prefs/browser_prefs.cc
@@ -644,6 +644,8 @@
   GpuModeManager::RegisterPrefs(registry);
   signin::IdentityManager::RegisterLocalStatePrefs(registry);
   invalidation::FCMInvalidationService::RegisterPrefs(registry);
+  invalidation::InvalidatorRegistrarWithMemory::RegisterPrefs(registry);
+  invalidation::PerUserTopicSubscriptionManager::RegisterPrefs(registry);
   language::GeoLanguageProvider::RegisterLocalStatePrefs(registry);
   language::UlpLanguageCodeLocator::RegisterLocalStatePrefs(registry);
   memory::EnterpriseMemoryLimitPrefObserver::RegisterPrefs(registry);
@@ -664,8 +666,6 @@
   sessions::SessionIdGenerator::RegisterPrefs(registry);
   SSLConfigServiceManager::RegisterPrefs(registry);
   subresource_filter::IndexedRulesetVersion::RegisterPrefs(registry);
-  syncer::InvalidatorRegistrarWithMemory::RegisterPrefs(registry);
-  syncer::PerUserTopicSubscriptionManager::RegisterPrefs(registry);
   SystemNetworkContextManager::RegisterPrefs(registry);
   update_client::RegisterPrefs(registry);
   variations::VariationsService::RegisterPrefs(registry);
@@ -857,6 +857,8 @@
   image_fetcher::ImageCache::RegisterProfilePrefs(registry);
   site_engagement::ImportantSitesUtil::RegisterProfilePrefs(registry);
   IncognitoModePrefs::RegisterProfilePrefs(registry);
+  invalidation::PerUserTopicSubscriptionManager::RegisterProfilePrefs(registry);
+  invalidation::InvalidatorRegistrarWithMemory::RegisterProfilePrefs(registry);
   language::LanguagePrefs::RegisterProfilePrefs(registry);
   login_detection::prefs::RegisterProfilePrefs(registry);
   lookalikes::RegisterProfilePrefs(registry);
@@ -899,8 +901,6 @@
   sync_sessions::SessionSyncPrefs::RegisterProfilePrefs(registry);
   syncer::DeviceInfoPrefs::RegisterProfilePrefs(registry);
   syncer::SyncPrefs::RegisterProfilePrefs(registry);
-  syncer::PerUserTopicSubscriptionManager::RegisterProfilePrefs(registry);
-  syncer::InvalidatorRegistrarWithMemory::RegisterProfilePrefs(registry);
   TemplateURLPrepopulateData::RegisterProfilePrefs(registry);
   translate::TranslatePrefs::RegisterProfilePrefs(registry);
   omnibox::RegisterProfilePrefs(registry);