Reland of "Apply Shelf/Dock opacity animations for the Material Design style."

ash/ash.gyp

 # 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.
 
 {
   'variables': {
     'chromium_code': 1,
     # These files lists are shared with the GN build.
     'ash_sources': [
       'accelerators/accelerator_commands_aura.cc',
@@ skipping 90 matching lines @@
       'common/shelf/app_list_shelf_item_delegate.h',
       'common/shelf/ink_drop_button_listener.h',
       'common/shelf/overflow_bubble.cc',
       'common/shelf/overflow_bubble.h',
       'common/shelf/overflow_bubble_view.cc',
       'common/shelf/overflow_bubble_view.h',
       'common/shelf/overflow_button.cc',
       'common/shelf/overflow_button.h',
       'common/shelf/shelf_alignment_menu.cc',
       'common/shelf/shelf_alignment_menu.h',
+      'common/shelf/shelf_background_animator.cc',
+      'common/shelf/shelf_background_animator.h',
+      'common/shelf/shelf_background_animator_observer.h',
       'common/shelf/shelf_button.cc',
       'common/shelf/shelf_button.h',
       'common/shelf/shelf_button_pressed_metric_tracker.cc',
       'common/shelf/shelf_button_pressed_metric_tracker.h',
       'common/shelf/shelf_constants.cc',
       'common/shelf/shelf_constants.h',
       'common/shelf/shelf_delegate.h',
       'common/shelf/shelf_item_delegate.h',
       'common/shelf/shelf_item_types.cc',
       'common/shelf/shelf_item_types.h',
@@ skipping 666 matching lines @@
       'content/keyboard_overlay/keyboard_overlay_delegate.cc',
       'content/keyboard_overlay/keyboard_overlay_delegate.h',
       'content/keyboard_overlay/keyboard_overlay_view.cc',
       'content/keyboard_overlay/keyboard_overlay_view.h',
       'content/screen_orientation_delegate_chromeos.cc',
       'content/screen_orientation_delegate_chromeos.h',
       'content/shell_content_state.cc',
       'content/shell_content_state.h',
     ],
     'ash_test_support_sources': [
+      'common/test/material_design_controller_test_api.cc',
+      'common/test/material_design_controller_test_api.h',
       'common/test/test_volume_control_delegate.cc',
       'common/test/test_volume_control_delegate.h',
       'desktop_background/desktop_background_controller_test_api.cc',
       'desktop_background/desktop_background_controller_test_api.h',
       'shell/toplevel_window.cc',
       'shell/toplevel_window.h',
       'test/ash_md_test_base.cc',
       'test/ash_md_test_base.h',
       'test/ash_test_base.cc',
       'test/ash_test_base.h',
       'test/ash_test_helper.cc',
       'test/ash_test_helper.h',
       'test/ash_test_views_delegate.cc',
       'test/ash_test_views_delegate.h',
       'test/child_modal_window.cc',
       'test/child_modal_window.h',
       'test/cursor_manager_test_api.cc',
       'test/cursor_manager_test_api.h',
       'test/display_manager_test_api.cc',
       'test/display_manager_test_api.h',
-      'test/material_design_controller_test_api.cc',
-      'test/material_design_controller_test_api.h',
       'test/mirror_window_test_api.cc',
       'test/mirror_window_test_api.h',
       'test/overflow_bubble_view_test_api.cc',
       'test/overflow_bubble_view_test_api.h',
       'test/shelf_button_pressed_metric_tracker_test_api.cc',
       'test/shelf_button_pressed_metric_tracker_test_api.h',
       'test/shelf_test_api.h',
       'test/shelf_view_test_api.cc',
       'test/shelf_view_test_api.h',
       'test/shell_test_api.cc',
@@ skipping 83 matching lines @@
       'accelerators/accelerator_filter_unittest.cc',
       'accelerators/magnifier_key_scroller_unittest.cc',
       'accelerators/spoken_feedback_toggler_unittest.cc',
       'app_list/app_list_presenter_delegate_unittest.cc',
       'ash_touch_exploration_manager_chromeos_unittest.cc',
       'autoclick/autoclick_unittest.cc',
       'common/accelerators/accelerator_table_unittest.cc',
       'common/display/display_info_unittest.cc',
       'common/material_design/material_design_controller_unittest.cc',
       'common/popup_message_unittest.cc',
+      'common/shelf/shelf_background_animator_unittest.cc',
       'common/shelf/shelf_button_pressed_metric_tracker_unittest.cc',
       'common/shelf/shelf_locking_manager_unittest.cc',
       'common/shelf/shelf_model_unittest.cc',
       'common/shelf/shelf_navigator_unittest.cc',
       'common/system/chromeos/brightness/tray_brightness_unittest.cc',
       'common/system/chromeos/ime_menu/ime_menu_tray_unittest.cc',
       'common/system/chromeos/media_security/multi_profile_media_tray_item_unittest.cc',
       'common/system/chromeos/palette/palette_tool_manager_unittest.cc',
       'common/system/chromeos/power/power_status_unittest.cc',
       'common/system/chromeos/power/power_status_view_unittest.cc',
@@ skipping 545 matching lines @@
                   '../tools/xdisplaycheck/xdisplaycheck.gyp:xdisplaycheck',
                 ],
               }
             ],
           ],
         },
       ],
     }],
   ],
 }