chromeos: Remove AshTestBase::SupportsMultipleDisplays

ash/wm/window_state_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_state.h"
 
 #include <utility>
 
 #include "ash/common/material_design/material_design_controller.h"
 #include "ash/common/wm/window_state.h"
@@ skipping 47 matching lines @@
 INSTANTIATE_TEST_CASE_P(
     /* prefix intentionally left blank due to only one parameterization */,
     WindowStateTest,
     testing::Values(MaterialDesignController::NON_MATERIAL,
                     MaterialDesignController::MATERIAL_NORMAL,
                     MaterialDesignController::MATERIAL_EXPERIMENTAL));
 
 // Test that a window gets properly snapped to the display's edges in a
 // multi monitor environment.
 TEST_P(WindowStateTest, SnapWindowBasic) {
-  if (!SupportsMultipleDisplays())
-    return;
-
   UpdateDisplay("0+0-500x400, 0+500-600x400");
   const gfx::Rect kPrimaryDisplayWorkAreaBounds =
       display::Screen::GetScreen()->GetPrimaryDisplay().work_area();
   const gfx::Rect kSecondaryDisplayWorkAreaBounds =
       display_manager()->GetSecondaryDisplay().work_area();
 
   std::unique_ptr<aura::Window> window(
       CreateTestWindowInShellWithBounds(gfx::Rect(100, 100, 100, 100)));
   WindowState* window_state = GetWindowState(window.get());
   const WMEvent snap_left(WM_EVENT_SNAP_LEFT);
@@ skipping 389 matching lines @@
   // return to the state before minimizing and fullscreen.
   ash::wm::ToggleFullScreen(window_state, nullptr);
   ASSERT_TRUE(window_state->IsMaximized());
 }
 
 // TODO(skuhne): Add more unit test to verify the correctness for the restore
 // operation.
 
 }  // namespace wm
 }  // namespace ash