Cleanup: Remove ProfileSyncService::GetModelSafeRoutingInfo

It's unused.

Bug: 839834
Change-Id: Ic354b16a5534aab8ce89c036b8a81a2ceeb3ae60
Reviewed-on: https://chromium-review.googlesource.com/1046672Reviewed-by: Mikel Astiz <mastiz@chromium.org>
Commit-Queue: Marc Treib <treib@chromium.org>
Cr-Commit-Position: refs/heads/master@{#556412}

components/browser_sync/profile_sync_service.cc

@@ -1725,16 +1725,6 @@ BackendMigrator* ProfileSyncService::GetBackendMigratorForTest() {
   return migrator_.get();
 }
 
-void ProfileSyncService::GetModelSafeRoutingInfo(
-    syncer::ModelSafeRoutingInfo* out) const {
-  DCHECK(thread_checker_.CalledOnValidThread());
-  if (engine_ && engine_initialized_) {
-    engine_->GetModelSafeRoutingInfo(out);
-  } else {
-    NOTREACHED();
-  }
-}
-
 std::unique_ptr<base::Value> ProfileSyncService::GetTypeStatusMap() {
   DCHECK(thread_checker_.CalledOnValidThread());
   auto result = std::make_unique<base::ListValue>();

components/browser_sync/profile_sync_service.h

@@ -466,9 +466,6 @@ class ProfileSyncService : public syncer::SyncServiceBase,
   // Used by tests to inspect the OAuth2 access tokens used by PSS.
   std::string GetAccessTokenForTest() const;
 
-  // TODO(sync): This is only used in tests.  Can we remove it?
-  void GetModelSafeRoutingInfo(syncer::ModelSafeRoutingInfo* out) const;
-
   // SyncPrefObserver implementation.
   void OnSyncManagedPrefChange(bool is_sync_managed) override;