mash: Move tray accessibility and keyboard to //ash/common

ash/ash.gyp

Index: ash/ash.gyp
diff --git a/ash/ash.gyp b/ash/ash.gyp
index 516246ab3780797169dac9f99f2879a985cb7a9f..9d2bc6953bf9fecacf3ecac991ea3ee2a6e1d3e9 100644
--- a/ash/ash.gyp
+++ b/ash/ash.gyp
@@ -66,6 +66,9 @@
       'common/default_accessibility_delegate.h',
       'common/focus_cycler.cc',
       'common/focus_cycler.h',
+      'common/keyboard/keyboard_ui.cc',
+      'common/keyboard/keyboard_ui.h',
+      'common/keyboard/keyboard_ui_observer.h',
       'common/login_status.h',
       'common/material_design/material_design_controller.cc',
       'common/material_design/material_design_controller.h',
@@ -148,6 +151,8 @@
       'common/system/tray/tray_bar_button_with_title.h',
       'common/system/tray/tray_constants.cc',
       'common/system/tray/tray_constants.h',
+      'common/system/tray/tray_details_view.cc',
+      'common/system/tray/tray_details_view.h',
       'common/system/tray/tray_empty.cc',
       'common/system/tray/tray_empty.h',
       'common/system/tray/tray_image_item.cc',
@@ -171,6 +176,8 @@
       'common/system/tray/view_click_listener.h',
       'common/system/tray/wm_system_tray_notifier.cc',
       'common/system/tray/wm_system_tray_notifier.h',
+      'common/system/tray_accessibility.cc',
+      'common/system/tray_accessibility.h',
       'common/system/update/tray_update.cc',
       'common/system/update/tray_update.h',
       'common/system/update/update_observer.h',
@@ -383,9 +390,6 @@
       'host/transformer_helper.h',
       'ime/input_method_event_handler.cc',
       'ime/input_method_event_handler.h',
-      'keyboard/keyboard_ui.cc',
-      'keyboard/keyboard_ui.h',
-      'keyboard/keyboard_ui_observer.h',
       'keyboard_uma_event_filter.cc',
       'keyboard_uma_event_filter.h',
       'link_handler_model.cc',
@@ -600,12 +604,8 @@
       'system/tray/tray_background_view.h',
       'system/tray/tray_bubble_wrapper.cc',
       'system/tray/tray_bubble_wrapper.h',
-      'system/tray/tray_details_view.cc',
-      'system/tray/tray_details_view.h',
       'system/tray/tray_event_filter.cc',
       'system/tray/tray_event_filter.h',
-      'system/tray_accessibility.cc',
-      'system/tray_accessibility.h',
       'system/user/button_from_view.cc',
       'system/user/button_from_view.h',
       'system/user/login_status.cc',
@@ -903,6 +903,7 @@
       'common/system/chromeos/power/power_status_view_unittest.cc',
       'common/system/chromeos/power/tray_power_unittest.cc',
       'common/system/date/date_view_unittest.cc',
+      'common/system/tray/tray_details_view_unittest.cc',
       'common/system/update/tray_update_unittest.cc',
       'content/display/screen_orientation_controller_chromeos_unittest.cc',
       'content/keyboard_overlay/keyboard_overlay_delegate_unittest.cc',
@@ -972,7 +973,6 @@
       'system/toast/toast_manager_unittest.cc',
       'system/tray/media_security/multi_profile_media_tray_item_unittest.cc',
       'system/tray/system_tray_unittest.cc',
-      'system/tray/tray_details_view_unittest.cc',
       'system/user/tray_user_unittest.cc',
       'system/web_notification/ash_popup_alignment_delegate_unittest.cc',
       'system/web_notification/web_notification_tray_unittest.cc',