Refactor UpgradeDetector.

chrome/chrome_browser.gypi

 # Copyright (c) 2011 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': 'browser',
       'type': 'static_library',
       'msvs_guid': '5BF908A7-68FB-4A4B-99E3-8C749F1FE4EA',
@@ skipping 703 matching lines @@
         'browser/chromeos/status/window_switcher_button.cc',
         'browser/chromeos/status/window_switcher_button.h',
         'browser/chromeos/system_access.cc',
         'browser/chromeos/system_access.h',
         'browser/chromeos/system_key_event_listener.cc',
         'browser/chromeos/system_key_event_listener.h',
         'browser/chromeos/tab_closeable_state_watcher.cc',
         'browser/chromeos/tab_closeable_state_watcher.h',
         'browser/chromeos/update_observer.cc',
         'browser/chromeos/update_observer.h',
+        'browser/chromeos/upgrade_detector_chromeos.cc',
+        'browser/chromeos/upgrade_detector_chromeos.h',
         'browser/chromeos/user_cros_settings_provider.cc',
         'browser/chromeos/user_cros_settings_provider.h',
         'browser/chromeos/version_loader.cc',
         'browser/chromeos/version_loader.h',
         'browser/chromeos/view_ids.h',
         'browser/chromeos/views/copy_background.cc',
         'browser/chromeos/views/copy_background.h',
         'browser/chromeos/views/dropdown_button.cc',
         'browser/chromeos/views/dropdown_button.h',
         'browser/chromeos/volume_bubble.cc',
@@ skipping 2770 matching lines @@
         'browser/ui/window_sizer.h',
         'browser/ui/window_sizer_linux.cc',
         'browser/ui/window_sizer_mac.mm',
         'browser/ui/window_sizer_win.cc',
         'browser/ui/window_snapshot/window_snapshot.h',
         'browser/ui/window_snapshot/window_snapshot_mac.mm',
         'browser/ui/window_snapshot/window_snapshot_win.cc',
         'browser/ui/window_snapshot/window_snapshot_x.cc',
         'browser/upgrade_detector.cc',
         'browser/upgrade_detector.h',
+        'browser/upgrade_detector_impl.cc',
+        'browser/upgrade_detector_impl.h',
         'browser/user_style_sheet_watcher.cc',
         'browser/user_style_sheet_watcher.h',
         'browser/visitedlink/visitedlink_event_listener.cc',
         'browser/visitedlink/visitedlink_event_listener.h',
         'browser/visitedlink/visitedlink_master.cc',
         'browser/visitedlink/visitedlink_master.h',
         'browser/web_applications/web_app.cc',
         'browser/web_applications/web_app.h',
         'browser/web_resource/gpu_blacklist_updater.cc',
         'browser/web_resource/gpu_blacklist_updater.h',
@@ skipping 96 matching lines @@
           'sources!': [
             'browser/background_mode_manager_linux.cc',
             'browser/first_run/upgrade_util.cc',
             'browser/first_run/upgrade_util.h',
             'browser/first_run/upgrade_util_linux.cc',
             'browser/password_manager/native_backend_gnome_x.cc',
             'browser/password_manager/native_backend_gnome_x.h',
             'browser/password_manager/native_backend_kwallet_x.cc',
             'browser/password_manager/native_backend_kwallet_x.h',
             'browser/platform_util_linux.cc',
+            'browser/upgrade_detector_impl.cc',
+            'browser/upgrade_detector_impl.h',
           ],
         }],
         ['use_cups==1', {
           'dependencies': [
             '../printing/printing.gyp:cups',
           ],
         }],
         ['use_gconf==0', {
           'sources!': [
             'browser/ui/gtk/gconf_titlebar_listener.cc',
@@ skipping 994 matching lines @@
       'hard_dependency': 1,
     },
   ],
 }
 
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