Files app: Add JS module main_background.m.js

Bug: 1133186
Change-Id: I0e15ab92a8925677b8d1e1462ddfda585ae44824
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2612877Reviewed-by: Jeremie Boulic <jboulic@chromium.org>
Commit-Queue: Luciano Pacheco <lucmult@chromium.org>
Cr-Commit-Position: refs/heads/master@{#841362}

ui/file_manager/BUILD.gn

@@ -87,13 +87,17 @@ preprocess_if_expr("preprocess_static") {
   in_files = [
     "audio_player/js/main.m.js",
     "audio_player/js/main_background.m.js",
+    "file_manager/background/js/main_background.m.js",
     "video_player/js/main.m.js",
     "video_player/js/main_background.m.js",
   ]
 
   deps = [
     "//ui/file_manager/audio_player/js:main.m",
+    "//ui/file_manager/audio_player/js:main_background.m",
+    "//ui/file_manager/file_manager/background/js:main_background.m",
     "//ui/file_manager/video_player/js:main.m",
+    "//ui/file_manager/video_player/js:main_background.m",
   ]
 }
 
@@ -117,39 +121,75 @@ preprocess_if_expr("preprocess_generated") {
 
     # Base:
     "base/js/app_util.m.js",
-    "base/js/volume_manager_types.m.js",
-    "base/js/mediasession_types.m.js",
+    "base/js/error_counter.m.js",
     "base/js/filtered_volume_manager.m.js",
+    "base/js/mediasession_types.m.js",
+    "base/js/volume_manager_types.m.js",
 
     # Common:
     "file_manager/common/js/async_util.m.js",
-    "file_manager/common/js/util.m.js",
+    "file_manager/common/js/file_operation_common.m.js",
     "file_manager/common/js/file_type.m.js",
     "file_manager/common/js/files_app_entry_types.m.js",
+    "file_manager/common/js/importer_common.m.js",
     "file_manager/common/js/lru_cache.m.js",
     "file_manager/common/js/metrics.m.js",
     "file_manager/common/js/metrics_base.m.js",
+    "file_manager/common/js/progress_center_common.m.js",
+    "file_manager/common/js/trash.m.js",
+    "file_manager/common/js/util.m.js",
 
     # Externs:
+    "externs/background/background_base.m.js",
+    "externs/background/crostini.m.js",
+    "externs/background/drive_sync_handler.m.js",
+    "externs/background/duplicate_finder.m.js",
+    "externs/background/file_browser_background_full.m.js",
+    "externs/background/file_operation_manager.m.js",
+    "externs/background/import_history.m.js",
+    "externs/background/media_import_handler.m.js",
+    "externs/background/media_scanner.m.js",
+    "externs/background/progress_center.m.js",
+    "externs/background/task_queue.m.js",
     "externs/entry_location.m.js",
+    "externs/exif_entry.m.js",
     "externs/files_app_entry_interfaces.m.js",
-    "externs/background/background_base.m.js",
+    "externs/metadata_worker_window.m.js",
+    "externs/progress_center_panel.m.js",
     "externs/volume_info.m.js",
     "externs/volume_info_list.m.js",
     "externs/volume_manager.m.js",
-    "externs/metadata_worker_window.m.js",
-    "externs/exif_entry.m.js",
 
     # Files app Background:
-    "file_manager/background/js/app_windows.m.js",
     "file_manager/background/js/app_window_wrapper.m.js",
+    "file_manager/background/js/app_windows.m.js",
+    "file_manager/background/js/background.m.js",
     "file_manager/background/js/background_base.m.js",
+    "file_manager/background/js/crostini.m.js",
+    "file_manager/background/js/device_handler.m.js",
+    "file_manager/background/js/drive_sync_handler.m.js",
+    "file_manager/background/js/duplicate_finder.m.js",
     "file_manager/background/js/entry_location_impl.m.js",
-    "file_manager/background/js/volume_manager_factory.m.js",
-    "file_manager/background/js/volume_manager_impl.m.js",
+    "file_manager/background/js/file_operation_handler.m.js",
+    "file_manager/background/js/file_operation_manager.m.js",
+    "file_manager/background/js/file_operation_util.m.js",
+    "file_manager/background/js/import_history.m.js",
+    "file_manager/background/js/launcher.m.js",
+    "file_manager/background/js/launcher_search.m.js",
+    "file_manager/background/js/media_import_handler.m.js",
+    "file_manager/background/js/media_scanner.m.js",
+    "file_manager/background/js/metadata_proxy.m.js",
+    "file_manager/background/js/metrics_start.m.js",
+    "file_manager/background/js/mount_metrics.m.js",
+    "file_manager/background/js/progress_center.m.js",
+    "file_manager/background/js/task_queue.m.js",
+    "file_manager/background/js/test_util.m.js",
+    "file_manager/background/js/test_util_base.m.js",
+    "file_manager/background/js/trash.m.js",
     "file_manager/background/js/volume_info_impl.m.js",
     "file_manager/background/js/volume_info_list_impl.m.js",
-    "file_manager/background/js/test_util_base.m.js",
+    "file_manager/background/js/volume_manager_factory.m.js",
+    "file_manager/background/js/volume_manager_impl.m.js",
     "file_manager/background/js/volume_manager_util.m.js",
 
     # Files app Foreground:
@@ -222,6 +262,7 @@ generate_grd("build_grd") {
     "audio_player/js/main_background.m.rollup.js",
     "audio_player/js/metadata_worker.m.rollup.js",
 
+    "file_manager/background/js/main_background.m.rollup.js",
     "file_manager/foreground/elements/files_icon_button.m.js",
     "file_manager/foreground/elements/files_toggle_ripple.m.js",
     "file_manager/foreground/elements/files_ripple.m.js",
@@ -234,6 +275,7 @@ generate_grd("build_grd") {
     "audio_player/js/main.m.rollup.js|audio_player/js/main.m.js",
     "audio_player/js/main_background.m.rollup.js|audio_player/js/main_background.m.js",
     "audio_player/js/metadata_worker.m.rollup.js|audio_player/js/metadata_worker.m.js",
+    "file_manager/background/js/main_background.m.rollup.js|file_manager/background/js/main_background.m.js",
     "video_player/js/main.m.rollup.js|video_player/js/main.m.js",
     "video_player/js/main_background.m.rollup.js|video_player/js/main_background.m.js",
   ]
@@ -249,6 +291,7 @@ generate_grd("build_grd") {
     "//ui/file_manager/audio_player/js:build",
     "//ui/file_manager/audio_player/js:build_background",
     "//ui/file_manager/audio_player/js:build_worker",
+    "//ui/file_manager/file_manager/background/js:build",
     "//ui/file_manager/file_manager/foreground/elements:elements",
     "//ui/file_manager/video_player/js:build",
     "//ui/file_manager/video_player/js:build_background",

ui/file_manager/file_manager/background/js/BUILD.gn

@@ -2,6 +2,7 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+import("//chrome/browser/resources/tools/optimize_webui.gni")
 import("//third_party/closure_compiler/compile_js.gni")
 import("//third_party/closure_compiler/js_unit_tests.gni")
 import("//ui/file_manager/base/gn/js_test_gen_html.gni")
@@ -267,6 +268,21 @@ js_library("background.m") {
   extra_deps = [ ":modulize" ]
 }
 
+js_library("main_background.m") {
+  visibility = []
+  visibility = [
+    ":*",
+    "//ui/file_manager:preprocess_static",
+  ]
+
+  deps = [
+    ":background.m",
+    ":metrics_start.m",
+    ":test_util.m",
+    "//ui/file_manager/base/js:error_counter.m",
+  ]
+}
+
 js_library("background_base") {
   visibility += related_apps
   deps = [
@@ -1315,3 +1331,24 @@ js_modulizer("modulize") {
 
   namespace_rewrites = cr_namespace_rewrites
 }
+
+preprocess_folder =
+    rebase_path(
+        "$target_gen_dir/../../../preprocessed/file_manager/background/js",
+        root_build_dir)
+
+optimize_webui("build") {
+  host = "file_manager"
+
+  input = preprocess_folder
+  js_module_in_files = [ "main_background.m.js" ]
+
+  js_out_files = [ "main_background.m.rollup.js" ]
+
+  deps = [
+    ":main_background.m",
+    "//ui/file_manager:preprocess_generated",
+    "//ui/file_manager:preprocess_static",
+    "//ui/webui/resources:preprocess",
+  ]
+}

ui/file_manager/file_manager/background/js/main_background.m.js

+// Copyright 2021 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.
+
+/**
+ * @fileoverview Main entry point for background page, it replaces the
+ * background_scripts.js.
+ */
+
+import './metrics_start.m.js';
+import '../../../base/js/error_counter.m.js';
+import './background.m.js';
+import './test_util.m.js';