Moved code dealing with accessibility tree from switch_access.js to new file, automation_manager.js

chrome/browser/resources/chromeos/switch_access/compiled_resources2.gyp

 # Copyright 2017 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.
 
 {
   'targets': [
     {
       'target_name': 'auto_scan_manager',
       'dependencies': [
         'switch_access_interface',
         'prefs',
       ],
       'includes': ['../../../../../third_party/closure_compiler/compile_js2.gypi'],
     },
     {
+      'target_name': 'automation_manager',
+      'dependencies': [
+        '<(EXTERNS_GYP):accessibility_private',
+        '<(EXTERNS_GYP):automation',
+        'tree_walker',
+      ],
+      'includes': ['../../../../../third_party/closure_compiler/compile_js2.gypi'],
+    },
+    {
       'target_name': 'background',
       'dependencies': [
         '<(EXTERNS_GYP):chrome_extensions',
         'switch_access',
       ],
       'includes': ['../../../../../third_party/closure_compiler/compile_js2.gypi'],
     },
     {
       'target_name': 'keyboard_handler',
       'dependencies': [
@@ skipping 19 matching lines @@
       'includes': ['../../../../../third_party/closure_compiler/compile_js2.gypi'],
     },
     {
       'target_name': 'switch_access',
       'dependencies': [
         '<(EXTERNS_GYP):accessibility_private',
         '<(EXTERNS_GYP):automation',
         '<(EXTERNS_GYP):chrome_extensions',
         'prefs',
         'auto_scan_manager',
+        'automation_manager',
         'keyboard_handler',
-        'tree_walker',
       ],
       'includes': ['../../../../../third_party/closure_compiler/compile_js2.gypi'],
     },
     {
       'target_name': 'switch_access_interface',
       'dependencies': [
         'prefs',
       ],
       'includes': ['../../../../../third_party/closure_compiler/compile_js2.gypi'],
     },
     {
       'target_name': 'tree_walker',
       'dependencies': [
         '<(EXTERNS_GYP):automation',
       ],
       'includes': ['../../../../../third_party/closure_compiler/compile_js2.gypi'],
     }
   ],
 }