Add FingerprintUnlock KeyedService for each profile

chrome/browser/chromeos/login/quick_unlock/fingerprint_unlock_factory.cc

Index: chrome/browser/chromeos/login/quick_unlock/fingerprint_unlock_factory.cc
diff --git a/chrome/browser/chromeos/login/quick_unlock/fingerprint_unlock_factory.cc b/chrome/browser/chromeos/login/quick_unlock/fingerprint_unlock_factory.cc
new file mode 100644
index 0000000000000000000000000000000000000000..651a95a9ac674463cab2355dc67edae54f40e0a1
--- /dev/null
+++ b/chrome/browser/chromeos/login/quick_unlock/fingerprint_unlock_factory.cc
@@ -0,0 +1,63 @@
+// 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/chromeos/login/quick_unlock/fingerprint_unlock_factory.h"
+
+#include "chrome/browser/chromeos/login/quick_unlock/fingerprint_unlock.h"
+#include "chrome/browser/chromeos/profiles/profile_helper.h"
+#include "chrome/browser/profiles/profile.h"
+#include "components/keyed_service/content/browser_context_dependency_manager.h"
+#include "components/user_manager/user.h"
+#include "components/user_manager/user_manager.h"
+
+namespace chromeos {
+namespace quick_unlock {
+
+// static
+FingerprintUnlock* FingerprintUnlockFactory::GetForProfile(Profile* profile) {
+  return static_cast<FingerprintUnlock*>(
+      GetInstance()->GetServiceForBrowserContext(profile, true));
+}
+
+// static
+FingerprintUnlock* FingerprintUnlockFactory::GetForUser(
+    const user_manager::User* user) {
+  Profile* profile = ProfileHelper::Get()->GetProfileByUser(user);
+  if (!profile)
+    return nullptr;
+
+  return GetForProfile(profile);
+}
+
+// static
+FingerprintUnlock* FingerprintUnlockFactory::GetForAccountId(
+    const AccountId& account_id) {
+  const user_manager::User* user =
+      user_manager::UserManager::Get()->FindUser(account_id);
+  if (!user)
+    return nullptr;
+
+  return GetForUser(user);
+}
+
+// static
+FingerprintUnlockFactory* FingerprintUnlockFactory::GetInstance() {
+  return base::Singleton<FingerprintUnlockFactory>::get();
+}
+
+FingerprintUnlockFactory::FingerprintUnlockFactory()
+    : BrowserContextKeyedServiceFactory(
+          "FingerprintUnlockFactory",
+          BrowserContextDependencyManager::GetInstance()) {}
+
+FingerprintUnlockFactory::~FingerprintUnlockFactory() {}
+
+KeyedService* FingerprintUnlockFactory::BuildServiceInstanceFor(
+    content::BrowserContext* context) const {
+  return new FingerprintUnlock(
+      Profile::FromBrowserContext(context)->GetPrefs());
+}
+
+}  // namespace quick_unlock
+}  // namespace chromeos