Hook up LocalNtpSource to OneGoogleBarService

chrome/browser/search/one_google_bar/one_google_bar_service.cc

 // Copyright 2017 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/search/one_google_bar/one_google_bar_service.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/callback.h"
@@ skipping 35 matching lines @@
     std::unique_ptr<OneGoogleBarFetcher> fetcher)
     : fetcher_(std::move(fetcher)),
       signin_observer_(base::MakeUnique<SigninObserver>(
           signin_manager,
           base::Bind(&OneGoogleBarService::SigninStatusChanged,
                      base::Unretained(this)))) {}
 
 OneGoogleBarService::~OneGoogleBarService() = default;
 
 void OneGoogleBarService::Shutdown() {
+  for (auto& observer : observers_) {
+    observer.OnOneGoogleBarServiceShuttingDown();
+  }
+
   signin_observer_.reset();
 }
 
 void OneGoogleBarService::Refresh() {
-  fetcher_->Fetch(base::BindOnce(&OneGoogleBarService::SetOneGoogleBarData,
+  fetcher_->Fetch(base::BindOnce(&OneGoogleBarService::OneGoogleBarDataFetched,
                                  base::Unretained(this)));
 }
 
 void OneGoogleBarService::AddObserver(OneGoogleBarServiceObserver* observer) {
   observers_.AddObserver(observer);
 }
 
 void OneGoogleBarService::RemoveObserver(
     OneGoogleBarServiceObserver* observer) {
   observers_.RemoveObserver(observer);
 }
 
 void OneGoogleBarService::SigninStatusChanged() {
   SetOneGoogleBarData(base::nullopt);
 }
 
+void OneGoogleBarService::OneGoogleBarDataFetched(
+    const base::Optional<OneGoogleBarData>& data) {
+  SetOneGoogleBarData(data);
+  if (!data) {
+    for (auto& observer : observers_) {
+      observer.OnOneGoogleBarFetchFailed();
+    }
+  }
+}
+
 void OneGoogleBarService::SetOneGoogleBarData(
     const base::Optional<OneGoogleBarData>& data) {
   if (one_google_bar_data_ == data) {
     return;
   }
 
   one_google_bar_data_ = data;
   for (auto& observer : observers_) {
     observer.OnOneGoogleBarDataChanged();
   }
 }