chromeos: Remove AshTestBase::SupportsMultipleDisplays

ash/test/ash_test_helper.h

 // Copyright 2013 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.
 
 #ifndef ASH_TEST_ASH_TEST_HELPER_H_
 #define ASH_TEST_ASH_TEST_HELPER_H_
 
 #include <memory>
 
 #include "ash/common/material_design/material_design_controller.h"
@@ skipping 52 matching lines @@
   void set_test_shell_delegate(TestShellDelegate* test_shell_delegate) {
     test_shell_delegate_ = test_shell_delegate;
   }
   TestScreenshotDelegate* test_screenshot_delegate() {
     return test_screenshot_delegate_;
   }
   AshTestViewsDelegate* views_delegate() { return views_delegate_.get(); }
 
   AshTestEnvironment* ash_test_environment() { return ash_test_environment_; }
 
-  // True if the running environment supports multiple displays,
-  // or false otherwise (e.g. win8 bot).
-  static bool SupportsMultipleDisplays();
-
  private:
   AshTestEnvironment* ash_test_environment_;  // Not owned.
   TestShellDelegate* test_shell_delegate_;  // Owned by ash::Shell.
   std::unique_ptr<ui::ScopedAnimationDurationScaleMode> zero_duration_mode_;
 
   // Owned by ash::AcceleratorController
   TestScreenshotDelegate* test_screenshot_delegate_;
 
   std::unique_ptr<::wm::WMState> wm_state_;
   std::unique_ptr<AshTestViewsDelegate> views_delegate_;
 
   // Check if DBus Thread Manager was initialized here.
   bool dbus_thread_manager_initialized_;
   // Check if Bluez DBus Manager was initialized here.
   bool bluez_dbus_manager_initialized_;
 
   std::unique_ptr<test::MaterialDesignControllerTestAPI> material_design_state_;
 
   DISALLOW_COPY_AND_ASSIGN(AshTestHelper);
 };
 
 }  // namespace test
 }  // namespace ash
 
 #endif  // ASH_TEST_ASH_TEST_HELPER_H_