Convert //chrome/browser/chromeos from scoped_ptr to std::unique_ptr

chrome/browser/chromeos/policy/device_policy_cros_browser_test.cc

Index: chrome/browser/chromeos/policy/device_policy_cros_browser_test.cc
diff --git a/chrome/browser/chromeos/policy/device_policy_cros_browser_test.cc b/chrome/browser/chromeos/policy/device_policy_cros_browser_test.cc
index 548a121e25b4901849b71993d95b0c8acb0b249b..8e837b7a6b9e919e7955d3eb9264a3b7bb532ea9 100644
--- a/chrome/browser/chromeos/policy/device_policy_cros_browser_test.cc
+++ b/chrome/browser/chromeos/policy/device_policy_cros_browser_test.cc
@@ -87,7 +87,8 @@ DevicePolicyCrosBrowserTest::~DevicePolicyCrosBrowserTest() {
 void DevicePolicyCrosBrowserTest::SetUpInProcessBrowserTestFixture() {
   dbus_setter_ = chromeos::DBusThreadManager::GetSetterForTesting();
   dbus_setter_->SetSessionManagerClient(
-      scoped_ptr<chromeos::SessionManagerClient>(fake_session_manager_client_));
+      std::unique_ptr<chromeos::SessionManagerClient>(
+          fake_session_manager_client_));
   InProcessBrowserTest::SetUpInProcessBrowserTestFixture();
 }