Shift cookie system callbacks to OnceCallback to impedance match mojo.

chrome/browser/browsing_data/mock_browsing_data_cookie_helper.cc

 // Copyright (c) 2012 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/browsing_data/mock_browsing_data_cookie_helper.h"
 
 #include <memory>
 
 #include "base/logging.h"
 #include "base/stl_util.h"
 #include "base/time/time.h"
 #include "net/cookies/cookie_options.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 MockBrowsingDataCookieHelper::MockBrowsingDataCookieHelper(
     net::URLRequestContextGetter* request_context_getter)
     : BrowsingDataCookieHelper(request_context_getter) {
 }
 
 MockBrowsingDataCookieHelper::~MockBrowsingDataCookieHelper() {
 }
 
 void MockBrowsingDataCookieHelper::StartFetching(
-    const net::CookieStore::GetCookieListCallback &callback) {
+    const FetchCallback& callback) {
   ASSERT_FALSE(callback.is_null());
   ASSERT_TRUE(callback_.is_null());
   callback_ = callback;
 }
 
 void MockBrowsingDataCookieHelper::DeleteCookie(
     const net::CanonicalCookie& cookie) {
   ASSERT_FALSE(callback_.is_null());
   std::string key = cookie.Name() + "=" + cookie.Value();
   ASSERT_TRUE(base::ContainsKey(cookies_, key));
@@ skipping 27 matching lines @@
     pair.second = true;
 }
 
 bool MockBrowsingDataCookieHelper::AllDeleted() {
   for (const auto& pair : cookies_) {
     if (pair.second)
       return false;
   }
   return true;
 }