chromeos: Remove AshTestBase::SupportsMultipleDisplays

ash/wm/window_cycle_controller_unittest.cc

 // Copyright 2014 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/common/wm/window_cycle_controller.h"
 
 #include <algorithm>
 #include <memory>
 
 #include "ash/common/focus_cycler.h"
@@ skipping 376 matching lines @@
   ASSERT_EQ(4u, GetWindows(controller).size());
   EXPECT_EQ(window0.get(), GetWindows(controller)[0]);
   EXPECT_EQ(window3.get(), GetWindows(controller)[1]);
   EXPECT_EQ(window2.get(), GetWindows(controller)[2]);
   EXPECT_EQ(window1.get(), GetWindows(controller)[3]);
 
   controller->CompleteCycling();
 }
 
 TEST_F(WindowCycleControllerTest, AlwaysOnTopMultipleRootWindows) {
-  if (!SupportsMultipleDisplays())
-    return;
-
   // Set up a second root window
   UpdateDisplay("1000x600,600x400");
   aura::Window::Windows root_windows = Shell::GetAllRootWindows();
   ASSERT_EQ(2U, root_windows.size());
 
   WindowCycleController* controller = WmShell::Get()->window_cycle_controller();
 
   // Create two windows in the primary root.
   std::unique_ptr<Window> window0(CreateTestWindowInShellWithId(0));
   EXPECT_EQ(root_windows[0], window0->GetRootWindow());
@@ skipping 354 matching lines @@
     // Base case sets the expectation for other cases.
     if (expected_bounds.IsEmpty())
       expected_bounds = display_relative_bounds;
     else
       EXPECT_EQ(expected_bounds, display_relative_bounds);
     controller->CompleteCycling();
   }
 }
 
 }  // namespace ash