CrOS Shelf: Rename AppListButton --> HomeButton

This change was created mostly with the help of sed and mv :-)

Bug: 973443
Change-Id: Id7c15d67e7be3ec20859fa26f43ad88145a16b96
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1679163
Commit-Queue: Manu Cornet <manucornet@chromium.org>
Reviewed-by: Mitsuru Oshima <oshima@chromium.org>
Reviewed-by: Alex Newcomer <newcomer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#672795}

• ash/BUILD.gn[diff]
• ash/accelerators/accelerator_controller_impl.cc[diff]
• ash/app_list/app_list_controller_impl.cc[diff]
• ash/app_list/app_list_controller_impl.h[diff]
• ash/app_list/app_list_metrics.h[diff]
• ash/app_list/app_list_presenter_delegate_impl.cc[diff]
• ash/app_list/app_list_presenter_delegate_unittest.cc[diff]
• ash/app_list/app_list_unittest.cc[diff]
• ash/app_list/views/app_list_view.cc[diff]
• ash/first_run/first_run_helper_impl.cc[diff]
• ash/public/cpp/first_run_helper.h[diff]
• ash/shelf/assistant_overlay.cc[diff]
• ash/shelf/assistant_overlay.h[diff]
• ash/shelf/default_shelf_view.cc[diff]
• ash/shelf/default_shelf_view.h[diff]
• ash/shelf/home_button.cc[Renamed from ash/shelf/app_list_button.cc - diff]
• ash/shelf/home_button.h[Renamed from ash/shelf/app_list_button.h - diff]
• ash/shelf/home_button_controller.cc[Renamed from ash/shelf/app_list_button_controller.cc - diff]
• ash/shelf/home_button_controller.h[Renamed from ash/shelf/app_list_button_controller.h - diff]
• ash/shelf/home_button_unittest.cc[Renamed from ash/shelf/app_list_button_unittest.cc - diff]
• ash/shelf/kiosk_next_shelf_view.cc[diff]
• ash/shelf/kiosk_next_shelf_view.h[diff]
• ash/shelf/shelf.h[diff]
• ash/shelf/shelf_constants.h[diff]
• ash/shelf/shelf_context_menu_model.cc[diff]
• ash/shelf/shelf_layout_manager_unittest.cc[diff]
• ash/shelf/shelf_tooltip_manager_unittest.cc[diff]
• ash/shelf/shelf_view.cc[diff]
• ash/shelf/shelf_view.h[diff]
• ash/shelf/shelf_view_test_api.h[diff]
• ash/shelf/shelf_view_unittest.cc[diff]
• ash/shelf/shelf_widget.cc[diff]
• ash/shelf/shelf_widget.h[diff]
• chrome/browser/ui/ash/launcher/chrome_launcher_controller_browsertest.cc[diff]