Add signal strength indicator icon to WebBluetooth chooser on non-Mac desktops

ui/resources/ui_resources.grd

 <?xml version="1.0" encoding="UTF-8"?>
 <grit latest_public_release="0" current_release="1">
   <outputs>
     <output filename="grit/ui_resources.h" type="rc_header" context="default_100_percent">
       <emit emit_type='prepend'></emit>
     </output>
     <output filename="grit/ui_resources_map.cc" type="resource_map_source" context="default_100_percent" />
     <output filename="grit/ui_resources_map.h" type="resource_map_header" context="default_100_percent" />
     <output filename="ui_resources_100_percent.pak" type="data_package" context="default_100_percent" />
     <output filename="ui_resources_200_percent.pak" type="data_package" context="default_200_percent" />
@@ skipping 113 matching lines @@
       <if expr="is_macosx">
         <structure type="chrome_scaled_image" name="IDR_MENU_CHECK_CHECKED" file="legacy/menu_check.png" />
         <structure type="chrome_scaled_image" name="IDR_MENU_OVERFLOW_UP" file="common/menu_overflow_up.png" />
         <structure type="chrome_scaled_image" name="IDR_MENU_OVERFLOW_DOWN" file="common/menu_overflow_down.png" />
       </if>
       <if expr="is_macosx or is_ios">
         <structure type="chrome_scaled_image" name="IDR_MENU_HIERARCHY_ARROW" file="mac/menu_hierarchy_arrow.png" />
       </if>
       <structure type="chrome_scaled_image" name="IDR_MENU_DROPARROW" file="cros/menu_droparrow.png" />
       <structure type="chrome_scaled_image" name="IDR_MESSAGE_CLOSE" file="common/message_close.png" />
+      <if expr="not is_android and not is_ios">
+        <structure type="chrome_scaled_image" name="IDR_NETWORK_BARS_DARK" file="common/statusbar_network_bars_dark.png" />

[msw, 2016/08/12 23:08:49]

What does the "statusbar" prefix mean, consider removing it?

[juncai, 2016/08/15 21:53:20]

Done.

+      </if>
       <if expr="toolkit_views or is_macosx or is_ios">
         <structure type="chrome_scaled_image" name="IDR_NOTIFICATION_ARROW" file="common/notification_arrow.png"/>
         <structure type="chrome_scaled_image" name="IDR_NOTIFICATION_ARROW_HOVER" file="common/notification_arrow_hover.png"/>
         <structure type="chrome_scaled_image" name="IDR_NOTIFICATION_ARROW_PRESSED" file="common/notification_arrow_pressed.png"/>
         <structure type="chrome_scaled_image" name="IDR_NOTIFICATION_ADVANCED_SETTINGS" file="common/notification_advanced_settings.png"/>
         <structure type="chrome_scaled_image" name="IDR_NOTIFICATION_ADVANCED_SETTINGS_HOVER" file="common/notification_advanced_settings_hover.png"/>
         <structure type="chrome_scaled_image" name="IDR_NOTIFICATION_ADVANCED_SETTINGS_PRESSED" file="common/notification_advanced_settings_pressed.png"/>
         <structure type="chrome_scaled_image" name="IDR_NOTIFICATION_CLEAR_ALL" file="common/notification_clear_all.png"/>
         <structure type="chrome_scaled_image" name="IDR_NOTIFICATION_CLEAR_ALL_DISABLED" file="common/notification_clear_all_disabled.png"/>
         <structure type="chrome_scaled_image" name="IDR_NOTIFICATION_CLEAR_ALL_HOVER" file="common/notification_clear_all_hover.png"/>
@@ skipping 48 matching lines @@
       <if expr="toolkit_views">
         <structure type="chrome_scaled_image" name="IDR_TOUCH_DRAG_TIP_COPY" file="common/drag_tip_copy.png" />
         <structure type="chrome_scaled_image" name="IDR_TOUCH_DRAG_TIP_MOVE" file="common/drag_tip_move.png" />
         <structure type="chrome_scaled_image" name="IDR_TOUCH_DRAG_TIP_LINK" file="common/drag_tip_link.png" />
         <structure type="chrome_scaled_image" name="IDR_TOUCH_DRAG_TIP_NODROP" file="common/drag_tip_nodrop.png" />
       </if>
       <structure type="chrome_scaled_image" name="IDR_TRANSLATE_ICON_BUBBLE" file="common/translate.png" />
     </structures>
   </release>
 </grit>