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

chrome/browser/chromeos/login/test/oobe_base_test.h

Index: chrome/browser/chromeos/login/test/oobe_base_test.h
diff --git a/chrome/browser/chromeos/login/test/oobe_base_test.h b/chrome/browser/chromeos/login/test/oobe_base_test.h
index 961a8698455ab6ca68e9cb2221425ef59fcdb6d5..431d040b6af4ef0f3e1aeeaf41400d57454da940 100644
--- a/chrome/browser/chromeos/login/test/oobe_base_test.h
+++ b/chrome/browser/chromeos/login/test/oobe_base_test.h
@@ -97,15 +97,16 @@ class OobeBaseTest : public ExtensionApiTest {
   void SetSignFormField(const std::string& field_id,
                         const std::string& field_value);
 
-  scoped_ptr<FakeGaia> fake_gaia_;
+  std::unique_ptr<FakeGaia> fake_gaia_;
   NetworkPortalDetectorTestImpl* network_portal_detector_;
 
   // Whether to use background networking. Note this is only effective when it
   // is set before SetUpCommandLine is invoked.
   bool needs_background_networking_;
 
-  scoped_ptr<content::WindowedNotificationObserver> login_screen_load_observer_;
-  scoped_ptr<extensions::ScopedCurrentChannel> scoped_channel_;
+  std::unique_ptr<content::WindowedNotificationObserver>
+      login_screen_load_observer_;
+  std::unique_ptr<extensions::ScopedCurrentChannel> scoped_channel_;
   HTTPSForwarder gaia_https_forwarder_;
   std::string gaia_frame_parent_;
   bool initialize_fake_merge_session_;