Revert "Files app: Move global entities used from foreground"

This reverts commit 74ee693e.

Reason for revert: Submitted with the wrong CL description.

Original change's description:
> Files app: Move global entities used from foreground
>
> Move launchFileManager() from `launcher` namespace and registerDialog()
> from global namespace to the interface FileBrowserBackgroundFull.
>
> This keeps consistent all access from foreground page going through this
> interface.
>
> Bug: 1133186
> Change-Id: I91157545620013baeef6eaa0143a5758a289a8ad
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2612254
> Commit-Queue: Luciano Pacheco <lucmult@chromium.org>
> Auto-Submit: Luciano Pacheco <lucmult@chromium.org>
> Reviewed-by: Jeremie Boulic <jboulic@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#840950}

TBR=lucmult@chromium.org,chromium-scoped@luci-project-accounts.iam.gserviceaccount.com,jboulic@chromium.org

Change-Id: I70623d88b81d98d33009db117d6771c09ee29149
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 1133186
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2612790Reviewed-by: Luciano Pacheco <lucmult@chromium.org>
Commit-Queue: Luciano Pacheco <lucmult@chromium.org>
Cr-Commit-Position: refs/heads/master@{#840957}

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

@@ -90,7 +90,6 @@ js_type_check("closure_compile_jsmodules") {
     ":media_import_handler.m",
     ":media_scanner.m",
     ":metadata_proxy.m",
-    ":metrics_start.m",
     ":mock_drive_sync_handler.m",
     ":mock_file_operation_manager.m",
     ":mock_progress_center.m",
@@ -663,13 +662,6 @@ js_unittest("metadata_proxy_unittest.m") {
   ]
 }
 
-js_library("metrics_start.m") {
-  sources = [ "$root_gen_dir/ui/file_manager/file_manager/background/js/metrics_start.m.js" ]
-  deps = [ "//ui/file_manager/file_manager/common/js:metrics.m" ]
-
-  extra_deps = [ ":modulize" ]
-}
-
 js_library("import_history") {
   deps = [
     ":metadata_proxy",
@@ -1051,22 +1043,6 @@ js_library("test_util_base.m") {
   extra_deps = [ ":modulize" ]
 }
 
-js_library("test_util.m") {
-  sources = [
-    "$root_gen_dir/ui/file_manager/file_manager/background/js/test_util.m.js",
-  ]
-
-  deps = [
-    ":background.m",
-    ":launcher.m",
-    ":test_util_base.m",
-    "//ui/file_manager/file_manager/common/js:progress_center_common.m",
-    "//ui/file_manager/file_manager/common/js:util.m",
-  ]
-
-  extra_deps = [ ":modulize" ]
-}
-
 js_library("test_import_history") {
   testonly = true
   deps = [
@@ -1293,10 +1269,8 @@ js_modulizer("modulize") {
     "mock_file_operation_manager.js",
     "mock_progress_center.js",
     "mount_metrics.js",
-    "metrics_start.js",
     "task_queue.js",
     "test_import_history.js",
-    "test_util.js",
     "import_history.js",
     "drive_sync_handler.js",
     "media_scanner.js",

ui/file_manager/file_manager/background/js/metrics_start.js

@@ -8,6 +8,4 @@
  * scripts that define the metrics namespace).
  */
 
-// #import {metrics} from '../../common/js/metrics.m.js';
-
 metrics.startInterval('Load.BackgroundScript');

ui/file_manager/file_manager/background/js/test_util.js

@@ -2,14 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// clang-format off
-// #import {background} from './background.m.js';
-// #import {test} from './test_util_base.m.js';
-// #import {launcher} from './launcher.m.js';
-// #import {util} from '../../common/js/util.m.js';
-// #import {ProgressCenterItem} from '../../common/js/progress_center_common.m.js';
-// clang-format on
-
 /**
  * Opens the main Files app's window and waits until it is ready.
  *