Snippets are enabled when search suggestions are enabled.

components/ntp_snippets/ntp_snippets_service.cc

 // Copyright 2015 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 "components/ntp_snippets/ntp_snippets_service.h"
 
 #include <algorithm>
 #include <iterator>
 #include <utility>
 
@@ skipping 168 matching lines @@
 void WrapImageFetchedCallback(
     const NTPSnippetsService::ImageFetchedCallback& callback,
     const GURL& snippet_id_url,
     const gfx::Image& image) {
   callback.Run(snippet_id_url.spec(), image);
 }
 
 }  // namespace
 
 NTPSnippetsService::NTPSnippetsService(
+    bool enabled,
     PrefService* pref_service,
     sync_driver::SyncService* sync_service,
     SuggestionsService* suggestions_service,
     scoped_refptr<base::SequencedTaskRunner> file_task_runner,
     const std::string& application_language_code,
     NTPSnippetsScheduler* scheduler,
     std::unique_ptr<NTPSnippetsFetcher> snippets_fetcher,
     std::unique_ptr<ImageFetcher> image_fetcher)
-    : state_(State::NOT_INITED),
-      enabled_(false),
+    : state_(State::INITED),
+      enabled_(enabled),
       pref_service_(pref_service),
       sync_service_(sync_service),
       sync_service_observer_(this),
       suggestions_service_(suggestions_service),
       file_task_runner_(file_task_runner),
       application_language_code_(application_language_code),
       scheduler_(scheduler),
       snippets_fetcher_(std::move(snippets_fetcher)),
       image_fetcher_(std::move(image_fetcher)) {
   snippets_fetcher_->SetCallback(base::Bind(
       &NTPSnippetsService::OnFetchFinished, base::Unretained(this)));
 
   // |sync_service_| can be null in tests or if sync is disabled.
   if (sync_service_)
     sync_service_observer_.Add(sync_service_);
-}
 
-NTPSnippetsService::~NTPSnippetsService() {
-  DCHECK(state_ == State::NOT_INITED || state_ == State::SHUT_DOWN);
-}
-
-// static
-void NTPSnippetsService::RegisterProfilePrefs(PrefRegistrySimple* registry) {
-  registry->RegisterListPref(prefs::kSnippets);
-  registry->RegisterListPref(prefs::kDiscardedSnippets);
-  registry->RegisterListPref(prefs::kSnippetHosts);
-}
-
-void NTPSnippetsService::Init(bool enabled) {
-  DCHECK(state_ == State::NOT_INITED);
-  state_ = State::INITED;
-
-  enabled_ = enabled;
   if (enabled_) {
     // |suggestions_service_| can be null in tests.
     if (snippets_fetcher_->UsesHostRestrictions() && suggestions_service_) {
       suggestions_service_subscription_ = suggestions_service_->AddCallback(
           base::Bind(&NTPSnippetsService::OnSuggestionsChanged,
                      base::Unretained(this)));
     }
 
     // Get any existing snippets immediately from prefs.
     LoadDiscardedSnippetsFromPrefs();
     LoadSnippetsFromPrefs();
 
     // If we don't have any snippets yet, start a fetch.
     if (snippets_.empty())
       FetchSnippets();
   }
 
   RescheduleFetching();
 }
 
+NTPSnippetsService::~NTPSnippetsService() {
+  DCHECK(state_ == State::SHUT_DOWN);
+}
+
+// static
+void NTPSnippetsService::RegisterProfilePrefs(PrefRegistrySimple* registry) {
+  registry->RegisterListPref(prefs::kSnippets);
+  registry->RegisterListPref(prefs::kDiscardedSnippets);
+  registry->RegisterListPref(prefs::kSnippetHosts);
+}
+
 void NTPSnippetsService::Shutdown() {
   DCHECK(state_ == State::INITED);
   state_ = State::SHUT_DOWN;
 
   FOR_EACH_OBSERVER(NTPSnippetsServiceObserver, observers_,
                     NTPSnippetsServiceShutdown());
   suggestions_service_subscription_.reset();
   enabled_ = false;
 }
 
@@ skipping 316 matching lines @@
 bool NTPSnippetsService::IsSyncStateIncompatible() {
   if (!sync_service_ || !sync_service_->CanSyncStart())
     return true;
   if (!sync_service_->IsSyncActive() || !sync_service_->ConfigurationDone())
     return false;  // Sync service is not initialized, yet not disabled.
   return !sync_service_->GetActiveDataTypes().Has(
       syncer::HISTORY_DELETE_DIRECTIVES);
 }
 
 }  // namespace ntp_snippets