chromeos: Remove AshTestBase::SupportsMultipleDisplays

ash/display/cursor_window_controller_unittest.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ash/display/cursor_window_controller.h"
 
 #include "ash/display/display_util.h"
 #include "ash/display/window_tree_host_manager.h"
 #include "ash/shell.h"
 #include "ash/test/ash_test_base.h"
@@ skipping 47 matching lines @@
  private:
   // Not owned.
   CursorWindowController* cursor_window_controller_;
 
   DISALLOW_COPY_AND_ASSIGN(CursorWindowControllerTest);
 };
 
 // Test that the composited cursor moves to another display when the real cursor
 // moves to another display.
 TEST_F(CursorWindowControllerTest, MoveToDifferentDisplay) {
-  if (!SupportsMultipleDisplays())
-    return;
-
   UpdateDisplay("200x200,200x200*2/r");
 
   WindowTreeHostManager* window_tree_host_manager =
       Shell::GetInstance()->window_tree_host_manager();
   int64_t primary_display_id = window_tree_host_manager->GetPrimaryDisplayId();
   int64_t secondary_display_id = display_manager()->GetSecondaryDisplay().id();
   aura::Window* primary_root =
       window_tree_host_manager->GetRootWindowForDisplayId(primary_display_id);
   aura::Window* secondary_root =
       window_tree_host_manager->GetRootWindowForDisplayId(secondary_display_id);
@@ skipping 86 matching lines @@
   ASSERT_TRUE(display::test::DisplayManagerTestApi(display_manager())
                   .SetDisplayUIScale(primary_id, 2.0f));
   ASSERT_EQ(
       1.0f,
       display::Screen::GetScreen()->GetPrimaryDisplay().device_scale_factor());
   EXPECT_TRUE(GetCursorImage().HasRepresentation(2.0f));
 }
 #endif
 
 }  // namespace ash