cros: Prevent shut down on lid-close during migration.

chrome/browser/ui/webui/chromeos/login/encryption_migration_screen_handler.cc

Index: chrome/browser/ui/webui/chromeos/login/encryption_migration_screen_handler.cc
diff --git a/chrome/browser/ui/webui/chromeos/login/encryption_migration_screen_handler.cc b/chrome/browser/ui/webui/chromeos/login/encryption_migration_screen_handler.cc
index e47c7ad10f96d3a801b44b0f14e9630dd8d51b20..dd152d7b269c420b98ce1f53884ee0aa8cef7a83 100644
--- a/chrome/browser/ui/webui/chromeos/login/encryption_migration_screen_handler.cc
+++ b/chrome/browser/ui/webui/chromeos/login/encryption_migration_screen_handler.cc
@@ -29,6 +29,7 @@
 #include "chromeos/dbus/dbus_thread_manager.h"
 #include "chromeos/dbus/power_manager/power_supply_properties.pb.h"
 #include "chromeos/dbus/power_manager_client.h"
+#include "chromeos/dbus/power_policy_controller.h"
 #include "components/login/localized_values_builder.h"
 #include "components/user_manager/user_manager.h"
 #include "content/public/browser/browser_thread.h"
@@ -282,11 +283,16 @@ void EncryptionMigrationScreenHandler::UpdateUIState(UIState state) {
   if (state == UIState::READY)
     DBusThreadManager::Get()->GetPowerManagerClient()->RequestStatusUpdate();
 
-  // We should block power save during migration.
-  if (state == UIState::MIGRATING)
+  // We should block power save and not poweroff on lid close during migration.
+  if (state == UIState::MIGRATING) {
     StartBlockingPowerSave();
-  else
+    if (PowerPolicyController::IsInitialize())

[Daniel Erat, 2017/05/30 13:39:42]

i don't think that this code should ever run before PowerPolicyController has
been initialized. can you double-check the initialization order and remove these
checks if possible?

[dspaid, 2017/05/30 23:37:22]

Done.

+      PowerPolicyController::Get()->SetEncryptionMigrationActive(true);
+  } else {
     StopBlockingPowerSave();
+    if (PowerPolicyController::IsInitialize())
+      PowerPolicyController::Get()->SetEncryptionMigrationActive(false);
+  }
 }
 
 void EncryptionMigrationScreenHandler::CheckAvailableStorage() {