Bring up of the enhanced bookmarks cluster service.

chrome/browser/enhanced_bookmarks/chrome_bookmark_server_cluster_service.cc

+// Copyright 2014 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 "chrome/browser/enhanced_bookmarks/chrome_bookmark_server_cluster_service.h"
+
+#include "chrome/browser/sync/profile_sync_service.h"
+#include "components/enhanced_bookmarks/enhanced_bookmark_model.h"
+
+namespace enhanced_bookmarks {
+
+ChromeBookmarkServerClusterService::ChromeBookmarkServerClusterService(
+    const std::string& application_language_code,
+    scoped_refptr<net::URLRequestContextGetter> request_context_getter,
+    ProfileOAuth2TokenService* token_service,
+    SigninManagerBase* signin_manager,
+    EnhancedBookmarkModel* enhanced_bookmark_model,
+    PrefService* pref_service,
+    ProfileSyncService* sync_service)
+    : BookmarkServerClusterService(application_language_code,
+                                   request_context_getter,
+                                   token_service,
+                                   signin_manager,
+                                   enhanced_bookmark_model,
+                                   pref_service),
+      sync_service_(sync_service) {
+  if (sync_service_)
+    sync_service_->AddObserver(this);
+}
+
+ChromeBookmarkServerClusterService::~ChromeBookmarkServerClusterService() {
+  if (sync_service_)
+    sync_service_->RemoveObserver(this);
+}
+
+void ChromeBookmarkServerClusterService::OnStateChanged() {
+  // Do nothing.
+}
+
+void ChromeBookmarkServerClusterService::OnSyncCycleCompleted() {
+  // The stars cluster API relies on the information in chrome-sync. Sending a
+  // cluster request immediately after a bookmark is changed from the bookmark
+  // observer notification will yield the wrong results. The request must be
+  // delayed until the sync cycle has completed.
+  // TODO(noyau): This might happen too often, need a way to coalesce and delay
+  // the notifications.
+  if (model_->loaded())
+    TriggerTokenRequest(false);
+}
+
+}  // namespace enhanced_bookmarks