Add Chrome OS AccountManagerFactory

Add a caching factory for Chrome OS |AccountManager|. Cache is keyed on
the basis of Profile path (|Profile::GetPath|).

AccountManager cannot be simply a part of |g_browser_process| because of
Chrome OS Multi Sign In. Accounts participating in Multi Sign In should
see separate instances of |AccountManager|.
Once Multi Sign In has been replaced by Multi Profile,
|AccountManagerFactory| can be removed and |AccountManager| can be made
a part of |g_browser_process|.

Bug: 820046
Change-Id: I8c2f2b2b5d8d61c5a818ab711197840bd605567b
Reviewed-on: https://chromium-review.googlesource.com/1010542Reviewed-by: Nico Weber <thakis@chromium.org>
Reviewed-by: Lutz Justen <ljusten@chromium.org>
Commit-Queue: Kush Sinha <sinhak@chromium.org>
Cr-Commit-Position: refs/heads/master@{#551176}

chrome/browser/browser_process_platform_part_chromeos.cc

@@ -4,6 +4,8 @@
 
 #include "chrome/browser/browser_process_platform_part_chromeos.h"
 
+#include <utility>
+
 #include "ash/public/interfaces/constants.mojom.h"
 #include "base/logging.h"
 #include "base/time/default_tick_clock.h"
@@ -28,6 +30,7 @@
 #include "chrome/browser/ui/ash/ash_util.h"
 #include "chrome/common/chrome_features.h"
 #include "chrome/common/chrome_switches.h"
+#include "chromeos/account_manager/account_manager_factory.h"
 #include "chromeos/geolocation/simple_geolocation_provider.h"
 #include "chromeos/timezone/timezone_resolver.h"
 #include "components/keep_alive_registry/keep_alive_types.h"
@@ -45,7 +48,9 @@
 #include "services/ui/public/interfaces/constants.mojom.h"
 
 BrowserProcessPlatformPart::BrowserProcessPlatformPart()
-    : created_profile_helper_(false) {}
+    : created_profile_helper_(false),
+      account_manager_factory_(
+          std::make_unique<chromeos::AccountManagerFactory>()) {}
 
 BrowserProcessPlatformPart::~BrowserProcessPlatformPart() {
   DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
@@ -226,3 +231,8 @@ void BrowserProcessPlatformPart::CreateProfileHelper() {
   created_profile_helper_ = true;
   profile_helper_.reset(new chromeos::ProfileHelper());
 }
+
+chromeos::AccountManagerFactory*
+BrowserProcessPlatformPart::GetAccountManagerFactory() {
+  return account_manager_factory_.get();
+}

chrome/browser/browser_process_platform_part_chromeos.h

@@ -18,7 +18,7 @@ class ChromeSessionManager;
 class ChromeUserManager;
 class ProfileHelper;
 class TimeZoneResolver;
-}
+}  // namespace chromeos
 
 namespace chromeos {
 namespace system {
@@ -27,8 +27,9 @@ class DeviceDisablingManager;
 class DeviceDisablingManagerDefaultDelegate;
 class SystemClock;
 class TimeZoneResolverManager;
-}
-}
+}  // namespace system
+class AccountManagerFactory;
+}  // namespace chromeos
 
 namespace policy {
 class BrowserPolicyConnectorChromeOS;
@@ -115,6 +116,8 @@ class BrowserProcessPlatformPart : public BrowserProcessPlatformPartBase {
 
   ui::InputDeviceControllerClient* GetInputDeviceControllerClient();
 
+  chromeos::AccountManagerFactory* GetAccountManagerFactory();
+
  private:
   void CreateProfileHelper();
 
@@ -144,6 +147,8 @@ class BrowserProcessPlatformPart : public BrowserProcessPlatformPartBase {
   std::unique_ptr<component_updater::CrOSComponentManager>
       cros_component_manager_;
 
+  std::unique_ptr<chromeos::AccountManagerFactory> account_manager_factory_;
+
 #if defined(USE_OZONE)
   std::unique_ptr<ui::InputDeviceControllerClient>
       input_device_controller_client_;

chrome/browser/profiles/profile_impl.cc

@@ -143,6 +143,8 @@
 #include "chrome/browser/chromeos/preferences.h"
 #include "chrome/browser/chromeos/profiles/profile_helper.h"
 #include "chrome/browser/chromeos/settings/device_settings_service.h"
+#include "chromeos/account_manager/account_manager.h"
+#include "chromeos/account_manager/account_manager_factory.h"
 #include "chromeos/assistant/buildflags.h"
 #include "chromeos/services/multidevice_setup/multidevice_setup_service.h"
 #include "chromeos/services/multidevice_setup/public/mojom/constants.mojom.h"
@@ -411,8 +413,8 @@ ProfileImpl::ProfileImpl(
       delegate_(delegate),
       predictor_(nullptr) {
   TRACE_EVENT0("browser,startup", "ProfileImpl::ctor")
-  DCHECK(!path.empty()) << "Using an empty path will attempt to write " <<
-                            "profile files to the root directory!";
+  DCHECK(!path.empty()) << "Using an empty path will attempt to write "
+                        << "profile files to the root directory!";
 
 #if defined(OS_CHROMEOS)
   if (!chromeos::ProfileHelper::IsSigninProfile(this) &&
@@ -427,6 +429,11 @@ ProfileImpl::ProfileImpl(
                user->GetAccountId()))
         << "Attempting to construct the profile before starting the user "
            "session";
+    chromeos::AccountManagerFactory* factory =
+        g_browser_process->platform_part()->GetAccountManagerFactory();
+    chromeos::AccountManager* account_manager =
+        factory->GetAccountManager(path.value());
+    account_manager->Initialize(path);
   }
 #endif
 

chromeos/BUILD.gn

@@ -65,6 +65,8 @@ component("chromeos") {
     "accelerometer/accelerometer_types.h",
     "account_manager/account_manager.cc",
     "account_manager/account_manager.h",
+    "account_manager/account_manager_factory.cc",
+    "account_manager/account_manager_factory.h",
     "app_mode/kiosk_oem_manifest_parser.cc",
     "app_mode/kiosk_oem_manifest_parser.h",
     "attestation/attestation_constants.cc",

chromeos/account_manager/account_manager_factory.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 "chromeos/account_manager/account_manager_factory.h"
+
+#include <string>
+#include <utility>
+
+#include "base/macros.h"
+#include "chromeos/account_manager/account_manager.h"
+
+namespace chromeos {
+
+AccountManagerFactory::AccountManagerFactory() = default;
+AccountManagerFactory::~AccountManagerFactory() = default;
+
+AccountManager* AccountManagerFactory::GetAccountManager(
+    const std::string& profile_path) {
+  DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
+
+  auto it = account_managers_.find(profile_path);
+  if (it == account_managers_.end()) {
+    it = account_managers_
+             .emplace(profile_path, std::make_unique<AccountManager>())
+             .first;
+  }
+
+  return it->second.get();
+}
+
+}  // namespace chromeos

chromeos/account_manager/account_manager_factory.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 CHROMEOS_ACCOUNT_MANAGER_ACCOUNT_MANAGER_FACTORY_H_
+#define CHROMEOS_ACCOUNT_MANAGER_ACCOUNT_MANAGER_FACTORY_H_
+
+#include <memory>
+#include <string>
+#include <unordered_map>
+
+#include "base/macros.h"
+#include "base/sequence_checker.h"
+#include "chromeos/account_manager/account_manager.h"
+
+namespace chromeos {
+
+// This factory is needed because of multi signin on Chrome OS. Device Accounts,
+// which are simultaneously logged into Chrome OS, should see different
+// instances of |AccountManager| and hence |AccountManager| cannot be a part of
+// a global like |g_browser_process| (otherwise Device Accounts will start
+// sharing |AccountManager| and by extension, their Secondary
+// Accounts/Identities, which is undesirable).
+// Once multi signin has been removed and multi profile on ChromeOS takes its
+// place, remove this class and make |AccountManager| a part of
+// |g_browser_process|.
+class CHROMEOS_EXPORT AccountManagerFactory {
+ public:
+  AccountManagerFactory();
+  ~AccountManagerFactory();
+
+  // Returns the |AccountManager| corresponding to the given |profile_path|.
+  AccountManager* GetAccountManager(const std::string& profile_path);
+
+ private:
+  // A mapping from Profile path to an |AccountManager|. Acts a cache of
+  // Account Managers.
+  std::unordered_map<std::string, std::unique_ptr<AccountManager>>
+      account_managers_;
+
+  SEQUENCE_CHECKER(sequence_checker_);
+
+  DISALLOW_COPY_AND_ASSIGN(AccountManagerFactory);
+};
+
+}  // namespace chromeos
+
+#endif  // CHROMEOS_ACCOUNT_MANAGER_ACCOUNT_MANAGER_FACTORY_H_