Relocate ozone gbm overlay config cache to manager

ui/ozone/platform/drm/gbm.gypi

 # 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.
 
 {
   'variables': {
     'internal_ozone_platform_deps': [
       'ozone_platform_gbm',
     ],
     'internal_ozone_platform_unittest_deps': [
@@ skipping 120 matching lines @@
         'host/drm_display_host.cc',
         'host/drm_display_host.h',
         'host/drm_display_host_manager.cc',
         'host/drm_display_host_manager.h',
         'host/drm_display_host_manager_core.cc',
         'host/drm_display_host_manager_core.h',
         'host/drm_gpu_platform_support_host.cc',
         'host/drm_gpu_platform_support_host.h',
         'host/drm_native_display_delegate.cc',
         'host/drm_native_display_delegate.h',
-        'host/drm_overlay_candidates_host_core.cc',
-        'host/drm_overlay_candidates_host_core.h',
         'host/drm_overlay_candidates_host.cc',
         'host/drm_overlay_candidates_host.h',
+        'host/drm_overlay_manager_core.cc',
+        'host/drm_overlay_manager_core.h',
         'host/drm_overlay_manager.cc',
         'host/drm_overlay_manager.h',
         'host/drm_window_host.cc',
         'host/drm_window_host.h',
         'host/drm_window_host_manager.cc',
         'host/drm_window_host_manager.h',
         'ozone_platform_gbm.cc',
         'ozone_platform_gbm.h',
       ],
       'conditions': [
@@ skipping 50 matching lines @@
           'gpu/mock_scanout_buffer.cc',
           'gpu/mock_scanout_buffer.h',
           'gpu/mock_scanout_buffer_generator.cc',
           'gpu/mock_scanout_buffer_generator.h',
           'gpu/screen_manager_unittest.cc',
         ],
       },
     },
   ],
 }