Update display::Display::kInvalidDisplayID constant.

ash/display/display_manager_unittest.cc

 // Copyright (c) 2012 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 "ui/display/manager/display_manager.h"
 
 #include "ash/accelerators/accelerator_commands_aura.h"
 #include "ash/common/material_design/material_design_controller.h"
 #include "ash/common/wm/window_state.h"
 #include "ash/display/display_configuration_controller.h"
@@ skipping 638 matching lines @@
   info.SetBounds(bounds);
   return info;
 }
 
 TEST_P(DisplayManagerTest, TestNativeDisplaysChanged) {
   const int64_t internal_display_id =
       display::test::DisplayManagerTestApi(display_manager())
           .SetFirstDisplayAsInternalDisplay();
   const int external_id = 10;
   const int mirror_id = 11;
-  const int64_t invalid_id = display::Display::kInvalidDisplayID;
+  const int64_t invalid_id = display::kInvalidDisplayId;
   const display::ManagedDisplayInfo internal_display_info =
       CreateDisplayInfo(internal_display_id, gfx::Rect(0, 0, 500, 500));
   const display::ManagedDisplayInfo external_display_info =
       CreateDisplayInfo(external_id, gfx::Rect(1, 1, 100, 100));
   const display::ManagedDisplayInfo mirroring_display_info =
       CreateDisplayInfo(mirror_id, gfx::Rect(0, 0, 500, 500));
 
   EXPECT_EQ(1U, display_manager()->GetNumDisplays());
   EXPECT_EQ(1U, display_manager()->num_connected_displays());
   std::string default_bounds =
@@ skipping 1808 matching lines @@
   const display::DisplayLayout& stored =
       layout_store->GetRegisteredDisplayLayout(list);
 
   EXPECT_EQ(id1, stored.placement_list[0].parent_display_id);
   EXPECT_EQ(id2, stored.placement_list[0].display_id);
 }
 
 #endif  // OS_CHROMEOS
 
 }  // namespace ash