[WebLayer] Implement CookieSettingsFactory

We need CookieSettings for adding the header necessary for the manage
accounts feature.

Bug: 1054160
Change-Id: I736267acaed75d23362ff96c77bd4a1b1634c707
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2127418Reviewed-by: John Abd-El-Malek <jam@chromium.org>
Commit-Queue: Clark DuVall <cduvall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#754708}

weblayer/BUILD.gn

@@ -115,6 +115,8 @@ source_set("weblayer_lib_base") {
     "browser/controls_visibility_reason.h",
     "browser/cookie_manager_impl.cc",
     "browser/cookie_manager_impl.h",
+    "browser/cookie_settings_factory.cc",
+    "browser/cookie_settings_factory.h",
     "browser/download_impl.cc",
     "browser/download_impl.h",
     "browser/download_manager_delegate_impl.cc",

weblayer/browser/cookie_settings_factory.cc

+// Copyright 2020 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 "weblayer/browser/cookie_settings_factory.h"
+
+#include "components/content_settings/core/browser/cookie_settings.h"
+#include "components/content_settings/core/common/pref_names.h"
+#include "components/keyed_service/content/browser_context_dependency_manager.h"
+#include "components/pref_registry/pref_registry_syncable.h"
+#include "components/prefs/pref_service.h"
+#include "weblayer/browser/browser_context_impl.h"
+#include "weblayer/browser/host_content_settings_map_factory.h"
+
+namespace weblayer {
+
+// static
+scoped_refptr<content_settings::CookieSettings>
+CookieSettingsFactory::GetForBrowserContext(
+    content::BrowserContext* browser_context) {
+  return static_cast<content_settings::CookieSettings*>(
+      GetInstance()->GetServiceForBrowserContext(browser_context, true).get());
+}
+
+// static
+CookieSettingsFactory* CookieSettingsFactory::GetInstance() {
+  static base::NoDestructor<CookieSettingsFactory> factory;
+  return factory.get();
+}
+
+CookieSettingsFactory::CookieSettingsFactory()
+    : RefcountedBrowserContextKeyedServiceFactory(
+          "CookieSettings",
+          BrowserContextDependencyManager::GetInstance()) {
+  DependsOn(HostContentSettingsMapFactory::GetInstance());
+}
+
+CookieSettingsFactory::~CookieSettingsFactory() = default;
+
+void CookieSettingsFactory::RegisterProfilePrefs(
+    user_prefs::PrefRegistrySyncable* registry) {
+  content_settings::CookieSettings::RegisterProfilePrefs(registry);
+}
+
+content::BrowserContext* CookieSettingsFactory::GetBrowserContextToUse(
+    content::BrowserContext* context) const {
+  return context;
+}
+
+scoped_refptr<RefcountedKeyedService>
+CookieSettingsFactory::BuildServiceInstanceFor(
+    content::BrowserContext* context) const {
+  return new content_settings::CookieSettings(
+      HostContentSettingsMapFactory::GetForBrowserContext(context),
+      static_cast<BrowserContextImpl*>(context)->pref_service(),
+      context->IsOffTheRecord());
+}
+
+}  // namespace weblayer

weblayer/browser/cookie_settings_factory.h

+// Copyright 2020 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 WEBLAYER_BROWSER_COOKIE_SETTINGS_FACTORY_H_
+#define WEBLAYER_BROWSER_COOKIE_SETTINGS_FACTORY_H_
+
+#include "base/no_destructor.h"
+#include "components/keyed_service/content/refcounted_browser_context_keyed_service_factory.h"
+
+namespace content_settings {
+class CookieSettings;
+}
+
+namespace weblayer {
+
+class CookieSettingsFactory
+    : public RefcountedBrowserContextKeyedServiceFactory {
+ public:
+  CookieSettingsFactory(const CookieSettingsFactory&) = delete;
+  CookieSettingsFactory& operator=(const CookieSettingsFactory&) = delete;
+
+  static scoped_refptr<content_settings::CookieSettings> GetForBrowserContext(
+      content::BrowserContext* browser_context);
+  static CookieSettingsFactory* GetInstance();
+
+ private:
+  friend class base::NoDestructor<CookieSettingsFactory>;
+
+  CookieSettingsFactory();
+  ~CookieSettingsFactory() override;
+
+  // BrowserContextKeyedServiceFactory methods:
+  void RegisterProfilePrefs(
+      user_prefs::PrefRegistrySyncable* registry) override;
+  content::BrowserContext* GetBrowserContextToUse(
+      content::BrowserContext* context) const override;
+  scoped_refptr<RefcountedKeyedService> BuildServiceInstanceFor(
+      content::BrowserContext* context) const override;
+};
+
+}  // namespace weblayer
+
+#endif  // WEBLAYER_BROWSER_COOKIE_SETTINGS_FACTORY_H_