[Sync] Port about:sync to DOMUI

chrome/browser/dom_ui/sync_internals_message_handler.cc

+// Copyright (c) 2011 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/dom_ui/sync_internals_message_handler.h"
+
+#include "base/callback.h"
+#include "base/logging.h"
+#include "base/values.h"
+#include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/sync/profile_sync_service.h"
+#include "chrome/browser/sync/sync_ui_util.h"
+
+SyncInternalsMessageHandler::SyncInternalsMessageHandler(Profile* profile)
+    : profile_(profile) {
+  DCHECK(profile_);
+  ProfileSyncService* service = profile_->GetProfileSyncService();
+  if (service) {
+    service->AddObserver(this);
+  }
+  // TODO(akalin): Listen for when the service gets created/destroyed.
+}
+
+SyncInternalsMessageHandler::~SyncInternalsMessageHandler() {
+  ProfileSyncService* service = profile_->GetProfileSyncService();
+  if (service) {
+    service->RemoveObserver(this);
+  }
+}
+
+void SyncInternalsMessageHandler::OnStateChanged() {
+  dom_ui_->CallJavascriptFunction(L"onSyncServiceStateChanged");
+}
+
+void SyncInternalsMessageHandler::RegisterMessages() {
+  dom_ui_->RegisterMessageCallback(
+      "getAboutInfo",
+      NewCallback(
+          this, &SyncInternalsMessageHandler::HandleGetAboutInfo));
+}
+
+void SyncInternalsMessageHandler::HandleGetAboutInfo(const ListValue* args) {
+  ProfileSyncService* service = profile_->GetProfileSyncService();
+  DictionaryValue about_info;
+  sync_ui_util::ConstructAboutInformation(service, &about_info);
+
+  dom_ui_->CallJavascriptFunction(L"onGetAboutInfoFinished", about_info);
+}