Add ios/chrome FakeGaiaCookieManagerService builder

Will shortly be needed by an //ios/chrome port of
IdentityTestEnvironmentProfileAdaptor.

Bug: 895772
Change-Id: Icb7478cfc51d6bd7f6061eeab5d1ced66fe1e1a7
Reviewed-on: https://chromium-review.googlesource.com/c/1290954Reviewed-by: David Roger <droger@chromium.org>
Commit-Queue: Colin Blundell <blundell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#601155}

ios/chrome/browser/signin/BUILD.gn

@@ -105,6 +105,8 @@ source_set("test_support") {
     "authentication_service_delegate_fake.mm",
     "authentication_service_fake.h",
     "authentication_service_fake.mm",
+    "fake_gaia_cookie_manager_service_builder.cc",
+    "fake_gaia_cookie_manager_service_builder.h",
     "fake_oauth2_token_service_builder.h",
     "fake_oauth2_token_service_builder.mm",
     "fake_signin_manager_builder.cc",

ios/chrome/browser/signin/fake_gaia_cookie_manager_service_builder.cc

+// Copyright 2018 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 "ios/chrome/browser/signin/fake_gaia_cookie_manager_service_builder.h"
+
+#include "components/keyed_service/core/keyed_service.h"
+#include "components/signin/core/browser/fake_gaia_cookie_manager_service.h"
+#include "components/signin/core/browser/profile_oauth2_token_service.h"
+#include "google_apis/gaia/gaia_constants.h"
+#include "ios/chrome/browser/browser_state/chrome_browser_state.h"
+#include "ios/chrome/browser/signin/profile_oauth2_token_service_factory.h"
+#include "ios/chrome/browser/signin/signin_client_factory.h"
+
+std::unique_ptr<KeyedService> BuildFakeGaiaCookieManagerService(
+    web::BrowserState* browser_state) {
+  ios::ChromeBrowserState* chrome_browser_state =
+      ios::ChromeBrowserState::FromBrowserState(browser_state);
+  return std::make_unique<FakeGaiaCookieManagerService>(
+      ProfileOAuth2TokenServiceFactory::GetForBrowserState(
+          chrome_browser_state),
+      GaiaConstants::kChromeSource,
+      SigninClientFactory::GetForBrowserState(chrome_browser_state));
+}

ios/chrome/browser/signin/fake_gaia_cookie_manager_service_builder.h

+// Copyright 2018 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.
+
+#ifndef IOS_CHROME_BROWSER_SIGNIN_FAKE_GAIA_COOKIE_MANAGER_SERVICE_BUILDER_H_
+#define IOS_CHROME_BROWSER_SIGNIN_FAKE_GAIA_COOKIE_MANAGER_SERVICE_BUILDER_H_
+
+#include <memory>
+
+class KeyedService;
+
+namespace web {
+class BrowserState;
+}
+
+// Helper functions to be used with KeyedService::SetTestingFactory().
+std::unique_ptr<KeyedService> BuildFakeGaiaCookieManagerService(
+    web::BrowserState* browser_state);
+
+#endif  // IOS_CHROME_BROWSER_SIGNIN_FAKE_GAIA_COOKIE_MANAGER_SERVICE_BUILDER_H_