Revert of Files.app: Split background.js (patchset #4 id:60001 of...

Revert of Files.app: Split background.js (patchset #4 id:60001 of https://codereview.chromium.org/562103002/)

Reason for revert:
This patch breaks the test.

Original issue's description:
> Files.app: Split background.js
>
> This patch splits the background.js into the 3 files (background_base.js, app_window_wrapper.js, background.js), extracting the common classes.
>
> This patch itself doesn't change any functionality, but the extracted files will be used in the separated audio player app in near future.
>
> BUG=375039
> TEST=browser_test passes
>
> Committed: https://crrev.com/479878c12c436c0bec667483df29fe1f23b710a2
> Cr-Commit-Position: refs/heads/master@{#294998}

TBR=hirono@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=375039

Review URL: https://codereview.chromium.org/563743004

Cr-Commit-Position: refs/heads/master@{#295019}

ui/file_manager/file_manager/background/js/background_base.js

-// 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.
-
-'use strict';
-
-/**
- * Root class of the background page.
- * @constructor
- */
-function BackgroundBase() {
-  /**
-   * Map of all currently open app windows. The key is an app ID.
-   * @type {Object.<string, AppWindow>}
-   */
-  this.appWindows = {};
-}
-
-/**
- * Checks the current condition of background page.
- * @return {boolean} True if the background page can be closed. False if not.
- */
-BackgroundBase.prototype.canClose = function() {
-  return true;
-};
-
-/**
- * Checks the current condition of background page and closes it if possible.
- */
-BackgroundBase.prototype.tryClose = function() {
-  if (this.canClose())
-    window.close();
-};
-
-/**
- * Gets similar windows, it means with the same initial url.
- * @param {string} url URL that the obtained windows have.
- * @return {Array.<AppWindow>} List of similar windows.
- */
-BackgroundBase.prototype.getSimilarWindows = function(url) {
-  var result = [];
-  for (var appID in this.appWindows) {
-    if (this.appWindows[appID].contentWindow.appInitialURL === url)
-      result.push(this.appWindows[appID]);
-  }
-  return result;
-};

ui/file_manager/file_manager/manifest.json

@@ -41,6 +41,20 @@
     "webview"
   ],
   "file_browser_handlers": [
+    {
+      "id": "play",
+      "default_title": "__MSG_PLAY_MEDIA__",
+      "default_icon": "common/images/file_types/200/audio.png",
+      "file_filters": [
+        "filesystem:*.amr",
+        "filesystem:*.flac",
+        "filesystem:*.m4a",
+        "filesystem:*.mp3",
+        "filesystem:*.oga",
+        "filesystem:*.ogg",
+        "filesystem:*.wav"
+      ]
+    },
     {
       "id": "mount-archive",
       "default_title": "__MSG_MOUNT_ARCHIVE__",
@@ -142,8 +156,6 @@
   // enough that anything is passed to web_accessible_resources. If there is
   // at least any file, then all files are allowed. http://crbug.com/179127.
   "web_accessible_resources": [
-    "background/js/app_window_wrapper.js",
-    "background/js/background_base.js",
     "background/js/test_util.js",
     "background/js/volume_manager.js",
     "common/js/async_util.js",
@@ -175,8 +187,6 @@
         "common/js/progress_center_common.js",
         "common/js/util.js",
         "common/js/volume_manager_common.js",
-        "background/js/app_window_wrapper.js",
-        "background/js/background_base.js",
         "background/js/device_handler.js",
         "background/js/drive_sync_handler.js",
         "background/js/file_operation_handler.js",

ui/file_manager/file_manager_resources.grd

@@ -17,23 +17,19 @@
       <include name="IDR_FILE_MANAGER_MAIN_JS" file="file_manager/foreground/js/main_scripts.js" flattenhtml="true" type="BINDATA" />
       <include name="IDR_FILE_MANAGER_BKGND_JS" file="file_manager/background/js/background.js" type="BINDATA" />
 
-      <!-- Commone Scripts. -->
+      <!-- Scripts working in background page. -->
       <include name="IDR_FILE_MANAGER_ERROR_UTIL_JS" file="file_manager/common/js/error_util.js" flattenhtml="false" type="BINDATA" />
       <include name="IDR_FILE_MANAGER_ASYNC_UTIL_JS" file="file_manager/common/js/async_util.js" flattenhtml="false" type="BINDATA" />
-      <include name="IDR_FILE_MANAGER_PROGRESS_CENTER_COMMON_JS" file="file_manager/common/js/progress_center_common.js" flattenhtml="false" type="BINDATA" />
-      <include name="IDR_FILE_MANAGER_UTIL_JS" file="file_manager/common/js/util.js" flattenhtml="false" type="BINDATA" />
-      <include name="IDR_FILE_MANAGER_VOLUME_MANAGER_COMMON_JS" file="file_manager/common/js/volume_manager_common.js" flattenhtml="false" type="BINDATA" />
-
-      <!-- Scripts working in background page. -->
-      <include name="IDR_FILE_MANAGER_DEVICE_APP_WINDOW_WRAPPER_JS" file="file_manager/background/js/app_window_wrapper.js" flattenhtml="false" type="BINDATA" />
-      <include name="IDR_FILE_MANAGER_DEVICE_BACKGROUND_BASE_JS" file="file_manager/background/js/background_base.js" flattenhtml="false" type="BINDATA" />
       <include name="IDR_FILE_MANAGER_DEVICE_HANDLER_JS" file="file_manager/background/js/device_handler.js" flattenhtml="false" type="BINDATA" />
       <include name="IDR_FILE_MANAGER_DRIVE_SYNC_HANDLER_JS" file="file_manager/background/js/drive_sync_handler.js" flattenhtml="false" type="BINDATA" />
       <include name="IDR_FILE_MANAGER_FILE_OPERATION_HANDLER_JS" file="file_manager/background/js/file_operation_handler.js" flattenhtml="false" type="BINDATA" />
       <include name="IDR_FILE_MANAGER_FILE_OPERATION_MANAGER_JS" file="file_manager/background/js/file_operation_manager.js" flattenhtml="false" type="BINDATA" />
+      <include name="IDR_FILE_MANAGER_PROGRESS_CENTER_COMMON_JS" file="file_manager/common/js/progress_center_common.js" flattenhtml="false" type="BINDATA" />
       <include name="IDR_FILE_MANAGER_PROGRESS_CENTER_JS" file="file_manager/background/js/progress_center.js" flattenhtml="false" type="BINDATA" />
       <include name="IDR_FILE_MANAGER_TEST_UTIL_JS" file="file_manager/background/js/test_util.js" flattenhtml="false" type="BINDATA" />
+      <include name="IDR_FILE_MANAGER_UTIL_JS" file="file_manager/common/js/util.js" flattenhtml="false" type="BINDATA" />
       <include name="IDR_FILE_MANAGER_VOLUME_MANAGER_JS" file="file_manager/background/js/volume_manager.js" flattenhtml="false" type="BINDATA" />
+      <include name="IDR_FILE_MANAGER_VOLUME_MANAGER_COMMON_JS" file="file_manager/common/js/volume_manager_common.js" flattenhtml="false" type="BINDATA" />
 
       <!-- Scripts referred by the gallery app. -->
       <include name="IDR_FILE_MANAGER_FILE_TYPE_JS" file="file_manager/foreground/js/file_type.js" flattenhtml="false" type="BINDATA" />