Fix Arc integration test.

chrome/browser/chromeos/arc/arc_session_manager.cc

Index: chrome/browser/chromeos/arc/arc_session_manager.cc
diff --git a/chrome/browser/chromeos/arc/arc_session_manager.cc b/chrome/browser/chromeos/arc/arc_session_manager.cc
index 7eab36a63c72b086c0c29b6e9e06b531d7179912..419e5215f01c98647d8a52271ba610bb062f9e9a 100644
--- a/chrome/browser/chromeos/arc/arc_session_manager.cc
+++ b/chrome/browser/chromeos/arc/arc_session_manager.cc
@@ -60,6 +60,9 @@ ArcSessionManager* g_arc_session_manager = nullptr;
 // Skip creating UI in unit tests
 bool g_disable_ui_for_testing = false;
 
+// Skip DCHECK(state() == State::REMOVING_DATA_DIR) in OnArcDataRemoved.
+bool g_is_session_manager_for_sync_test = false;
+
 // Use specified ash::ShelfDelegate for unit tests.
 ash::ShelfDelegate* g_shelf_delegate_for_testing = nullptr;
 
@@ -156,6 +159,11 @@ void ArcSessionManager::EnableCheckAndroidManagementForTesting() {
   g_enable_check_android_management_for_testing = true;
 }
 
+// static
+void ArcSessionManager::SetSessionManagerForSyncTest() {
+  g_is_session_manager_for_sync_test = true;
+}
+
 void ArcSessionManager::OnSessionReady() {
   for (auto& observer : arc_session_observer_list_)
     observer.OnSessionReady();
@@ -223,7 +231,8 @@ void ArcSessionManager::OnArcDataRemoved(bool success) {
     observer.OnArcDataRemoved();
 
   profile_->GetPrefs()->SetBoolean(prefs::kArcDataRemoveRequested, false);
-  DCHECK_EQ(state(), State::REMOVING_DATA_DIR);
+  DCHECK(state() == State::REMOVING_DATA_DIR ||
+         g_is_session_manager_for_sync_test);
   SetState(State::STOPPED);
 
   MaybeReenableArc();