Initial CL for Data Saver (Flywheel) prompt when cellular network detected

ui/chromeos/resources/ui_chromeos_resources.grd

 <?xml version="1.0" encoding="UTF-8"?>
 <grit latest_public_release="0" current_release="1">
   <outputs>
     <output filename="grit/ui_chromeos_resources.h" type="rc_header" context="default_100_percent">
       <emit emit_type='prepend'></emit>
     </output>
     <output filename="grit/ui_chromeos_resources_map.cc" type="resource_map_source" context="default_100_percent" />
     <output filename="grit/ui_chromeos_resources_map.h" type="resource_map_header" context="default_100_percent" />
     <output filename="ui_chromeos_resources_100_percent.pak" type="data_package" context="default_100_percent" />
     <output filename="ui_chromeos_resources_200_percent.pak" type="data_package" context="default_200_percent" />
@@ skipping 28 matching lines @@
       <structure type="chrome_scaled_image" name="IDR_AURA_UBER_TRAY_NETWORK_LTE_LIGHT" file="network/statusbar_network_lte_light.png" />
       <structure type="chrome_scaled_image" name="IDR_AURA_UBER_TRAY_NETWORK_PORTAL_DARK" file="network/statusbar_network_active_portal_dark.png" />
       <structure type="chrome_scaled_image" name="IDR_AURA_UBER_TRAY_NETWORK_PORTAL_LIGHT" file="network/statusbar_network_active_portal_light.png" />
       <structure type="chrome_scaled_image" name="IDR_AURA_UBER_TRAY_NETWORK_ROAMING_DARK" file="network/statusbar_network_roaming_dark.png" />
       <structure type="chrome_scaled_image" name="IDR_AURA_UBER_TRAY_NETWORK_ROAMING_LIGHT" file="network/statusbar_network_roaming_light.png" />
       <structure type="chrome_scaled_image" name="IDR_AURA_UBER_TRAY_NETWORK_SECURE_DARK" file="network/statusbar_network_secure_dark.png" />
       <structure type="chrome_scaled_image" name="IDR_AURA_UBER_TRAY_NETWORK_VPN" file="network/statusbar_vpn_dark.png" />
       <structure type="chrome_scaled_image" name="IDR_AURA_UBER_TRAY_NETWORK_VPN_BADGE" file="network/statusbar_network_vpn_badge.png" />
       <structure type="chrome_scaled_image" name="IDR_AURA_UBER_TRAY_NETWORK_WIRED" file="network/statusbar_wired.png" />
       <structure type="chrome_scaled_image" name="IDR_AURA_UBER_TRAY_NOTIFICATION_3G" file="network/notification_3g.png" />
+      <structure type="chrome_scaled_image" name="IDR_AURA_UBER_TRAY_NOTIFICATION_DS" file="network/notification_ds.png" />

[Daniel Erat, 2015/03/23 03:49:21]

"DS" isn't meaningful to most people. please rename the resource and file names
to include "data_saver"

[Greg Levin, 2015/03/24 20:35:33]

Done.

       <structure type="chrome_scaled_image" name="IDR_AURA_UBER_TRAY_NOTIFICATION_LTE" file="network/notification_lte.png" />
 
       <!-- Default user profile images. -->
       <structure type="chrome_scaled_image" name="IDR_LOGIN_DEFAULT_USER" file="default_user_images/avatar_beaker.png" />
       <structure type="chrome_scaled_image" name="IDR_LOGIN_DEFAULT_USER_1" file="default_user_images/avatar_bee.png" />
       <structure type="chrome_scaled_image" name="IDR_LOGIN_DEFAULT_USER_2" file="default_user_images/avatar_briefcase.png" />
       <structure type="chrome_scaled_image" name="IDR_LOGIN_DEFAULT_USER_3" file="default_user_images/avatar_circles.png" />
       <structure type="chrome_scaled_image" name="IDR_LOGIN_DEFAULT_USER_4" file="default_user_images/avatar_cloud.png" />
       <structure type="chrome_scaled_image" name="IDR_LOGIN_DEFAULT_USER_5" file="default_user_images/avatar_cupcake.png" />
       <structure type="chrome_scaled_image" name="IDR_LOGIN_DEFAULT_USER_6" file="default_user_images/avatar_day.png" />
@@ skipping 20 matching lines @@
       <structure type="chrome_scaled_image" name="IDR_LOGIN_DEFAULT_USER_27" file="default_user_images/avatar_jellyfish.png" />
       <structure type="chrome_scaled_image" name="IDR_LOGIN_DEFAULT_USER_28" file="default_user_images/avatar_kiwi.png" />
       <structure type="chrome_scaled_image" name="IDR_LOGIN_DEFAULT_USER_29" file="default_user_images/avatar_penguin.png" />
       <structure type="chrome_scaled_image" name="IDR_LOGIN_DEFAULT_USER_30" file="default_user_images/avatar_rainbowfish.png" />
       <structure type="chrome_scaled_image" name="IDR_LOGIN_DEFAULT_USER_31" file="default_user_images/avatar_recordplayer.png" />
       <structure type="chrome_scaled_image" name="IDR_LOGIN_DEFAULT_USER_32" file="default_user_images/avatar_upsidedown.png" />
       <structure type="chrome_scaled_image" name="IDR_LOGIN_DEFAULT_USER_33" file="default_user_images/avatar_cat.png" />
     </structures>
   </release>
 </grit>