chromeos: Remove AshTestBase::SupportsMultipleDisplays

chrome/browser/ui/ash/launcher/launcher_context_menu_unittest.cc

Index: chrome/browser/ui/ash/launcher/launcher_context_menu_unittest.cc
diff --git a/chrome/browser/ui/ash/launcher/launcher_context_menu_unittest.cc b/chrome/browser/ui/ash/launcher/launcher_context_menu_unittest.cc
index 133985d4ebdb6f2d49021b09a08f9db96adf9016..7fe0e459feb1d3174a5123766dcd029b30d88d82 100644
--- a/chrome/browser/ui/ash/launcher/launcher_context_menu_unittest.cc
+++ b/chrome/browser/ui/ash/launcher/launcher_context_menu_unittest.cc
@@ -288,9 +288,6 @@ TEST_F(LauncherContextMenuTest, ArcLauncherContextMenuItemCheck) {
 // Tests that fullscreen which makes "Autohide shelf" option disappeared on
 // shelf is a per-display setting (crbug.com/496681).
 TEST_F(LauncherContextMenuTest, AutohideShelfOptionOnExternalDisplay) {
-  if (!SupportsMultipleDisplays())
-    return;
-
   UpdateDisplay("940x550,940x550");
   int64_t primary_id = display::Screen::GetScreen()->GetPrimaryDisplay().id();
   int64_t secondary_id = display_manager()->GetSecondaryDisplay().id();