Revert 261551 "Enable supervised users password sync/import on C..."

[ Reason for revert: seems to have caused browsertest failures:
http://build.chromium.org/p/chromium.chromiumos/builders/Linux%20ChromiumOS%20Tests%20%282%29/builds/22838 ]

> Enable supervised users password sync/import on ChromeOS
> 
> TBR=nkostylev@chromium.org
> 
> BUG=282464, 244472
> 
> Review URL: https://codereview.chromium.org/224343003

TBR=antrim@chromium.org

Review URL: https://codereview.chromium.org/224723003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@261593 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/chromeos/login/managed/locally_managed_user_creation_screen.cc

@@ -6,6 +6,7 @@
 
 #include "ash/desktop_background/desktop_background_controller.h"
 #include "ash/shell.h"
+#include "base/command_line.h"
 #include "base/rand_util.h"
 #include "base/values.h"
 #include "chrome/browser/chromeos/camera_detector.h"
@@ -25,6 +26,7 @@
 #include "chrome/browser/managed_mode/managed_user_shared_settings_service_factory.h"
 #include "chrome/browser/managed_mode/managed_user_sync_service.h"
 #include "chrome/browser/managed_mode/managed_user_sync_service_factory.h"
+#include "chrome/common/chrome_switches.h"
 #include "chromeos/network/network_state.h"
 #include "content/public/browser/browser_thread.h"
 #include "grit/generated_resources.h"
@@ -341,6 +343,10 @@ void LocallyManagedUserCreationScreen::OnManagerFullyAuthenticated(
 
   last_page_ = kNameOfNewUserParametersScreen;
 
+  CommandLine* command_line = CommandLine::ForCurrentProcess();
+  if (!command_line->HasSwitch(::switches::kAllowCreateExistingManagedUsers))
+    return;
+
   ManagedUserSyncServiceFactory::GetForProfile(manager_profile)->
       GetManagedUsersAsync(base::Bind(
           &LocallyManagedUserCreationScreen::OnGetManagedUsers,

chrome/browser/chromeos/login/managed/supervised_user_authentication.cc

@@ -5,6 +5,7 @@
 #include "chrome/browser/chromeos/login/managed/supervised_user_authentication.h"
 
 #include "base/base64.h"
+#include "base/command_line.h"
 #include "base/json/json_file_value_serializer.h"
 #include "base/macros.h"
 #include "base/metrics/histogram.h"
@@ -16,6 +17,7 @@
 #include "chrome/browser/chromeos/login/user.h"
 #include "chrome/browser/chromeos/login/user_manager.h"
 #include "chrome/browser/chromeos/profiles/profile_helper.h"
+#include "chromeos/chromeos_switches.h"
 #include "chromeos/cryptohome/signed_secret.pb.h"
 #include "content/public/browser/browser_thread.h"
 #include "crypto/hmac.h"
@@ -135,7 +137,11 @@ void OnPasswordDataLoaded(
 SupervisedUserAuthentication::SupervisedUserAuthentication(
     SupervisedUserManager* owner)
       : owner_(owner),
-        stable_schema_(SCHEMA_SALT_HASHED) {
+        stable_schema_(SCHEMA_PLAIN) {
+  CommandLine* command_line = CommandLine::ForCurrentProcess();
+  if (command_line->HasSwitch(switches::kEnableSupervisedPasswordSync)) {
+    stable_schema_ = SCHEMA_SALT_HASHED;
+  }
 }
 
 SupervisedUserAuthentication::~SupervisedUserAuthentication() {}

chromeos/chromeos_switches.cc

@@ -204,5 +204,8 @@ const char kForceFirstRunUI[] = "force-first-run-ui";
 // Enables testing for auto update UI.
 const char kTestAutoUpdateUI[] = "test-auto-update-ui";
 
+// Enables features required for supervised user sync,
+const char kEnableSupervisedPasswordSync[] = "enable-supervised-password-sync";
+
 }  // namespace switches
 }  // namespace chromeos

chromeos/chromeos_switches.h

@@ -73,6 +73,7 @@ CHROMEOS_EXPORT extern const char kEnableFirstRunUITransitions[];
 CHROMEOS_EXPORT extern const char kDisableSamlSignin[];
 CHROMEOS_EXPORT extern const char kGAIAAuthExtensionManifest[];
 CHROMEOS_EXPORT extern const char kTestAutoUpdateUI[];
+CHROMEOS_EXPORT extern const char kEnableSupervisedPasswordSync[];
 
 }  // namespace switches
 }  // namespace chromeos