Implement app banner info bars on desktop.

chrome/app/theme/theme_resources.grd

 <?xml version="1.0" encoding="utf-8"?>
 <!-- This grd file contains images that are pre-scaled for device scale
      factors. The image returned by |base::ResourceBundle::GetImageNamed|
      will contain multiple |gfx:ImageSkiaReps| for each scale factors. The
      |fallback_to_low_resolution| attribute controls behavior when
      an image file is missing for target scale factor. If true, chrome
      will automatically scale the 1x image to the target scale factor.
      If false, build will fail due to missing resources. This is
      currently set to true for all resources, but the default will
      become false in near future.
@@ skipping 381 matching lines @@
         <structure type="chrome_scaled_image" name="IDR_INFOBARBUTTON_PRESSED_BOTTOM_RIGHT" file="common/infobarbutton_bottom_right_pressed.png" />
         <structure type="chrome_scaled_image" name="IDR_INFOBARBUTTON_PRESSED_CENTER" file="common/infobarbutton_center_pressed.png" />
         <structure type="chrome_scaled_image" name="IDR_INFOBARBUTTON_PRESSED_LEFT" file="common/infobarbutton_left_pressed.png" />
         <structure type="chrome_scaled_image" name="IDR_INFOBARBUTTON_PRESSED_RIGHT" file="common/infobarbutton_right_pressed.png" />
         <structure type="chrome_scaled_image" name="IDR_INFOBARBUTTON_PRESSED_TOP" file="common/infobarbutton_top_pressed.png" />
         <structure type="chrome_scaled_image" name="IDR_INFOBARBUTTON_PRESSED_TOP_LEFT" file="common/infobarbutton_top_left_pressed.png" />
         <structure type="chrome_scaled_image" name="IDR_INFOBARBUTTON_PRESSED_TOP_RIGHT" file="common/infobarbutton_top_right_pressed.png" />
       </if>
       <structure type="chrome_scaled_image" name="IDR_INFOBAR_3D_BLOCKED" file="common/infobar_3d_blocked.png" />
       <structure type="chrome_scaled_image" name="IDR_INFOBAR_ALT_NAV_URL" file="common/infobar_alt_nav_url.png" />
+      <structure type="chrome_scaled_image" name="IDR_INFOBAR_APP_BANNER" file="cros/kiosk_app_user_pod_icon.png" />

[benwells, 2015/06/02 05:53:35]

I didn't realise we didn't have an icon in common/ that we could use. We
shouldn't be using an icon from cros/ on all platforms - is there an icon under
common/ that is vaguely close that we can use instead?

[dominickn (DO NOT USE), 2015/06/02 06:51:32]

apps_bookmark_bar_icon.png is the closest, but it's colourful, rather than grey.
I've been in contact with rolfe regarding the icons; she has sent me some, but
they don't seem to be lining up correctly in the info bar so I'm following up on
that.

       <structure type="chrome_scaled_image" name="IDR_INFOBAR_AUTOLOGIN" file="common/infobar_autologin.png" />
       <structure type="chrome_scaled_image" name="IDR_INFOBAR_COOKIE" file="common/infobar_cookie.png" />
       <if expr="not is_android">
         <structure type="chrome_scaled_image" name="IDR_INFOBAR_CRYPTOTOKEN" file="common/infobar_cryptotoken.png" />
       </if>
       <structure type="chrome_scaled_image" name="IDR_INFOBAR_DESKTOP_NOTIFICATIONS" file="common/infobar_desktop_notifications.png" />
       <if expr="is_android">
         <!-- The actual image here is not used; this line only exists to
              reserve a valid ID, so the Android code can map it to the
              appropriate Android resource.  So we just refer to a random
@@ skipping 647 matching lines @@
       <!-- People search images -->
       <structure type="chrome_scaled_image" name="IDR_PEOPLE_SEARCH_ACTION_EMAIL" file="common/mail.png" />
       <structure type="chrome_scaled_image" name="IDR_PEOPLE_SEARCH_ACTION_EMAIL_HOVER" file="common/mail_hover.png" />
       <structure type="chrome_scaled_image" name="IDR_PEOPLE_SEARCH_ACTION_EMAIL_PRESSED" file="common/mail_pressed.png" />
       <structure type="chrome_scaled_image" name="IDR_PEOPLE_SEARCH_ACTION_CHAT" file="common/chat.png" />
       <structure type="chrome_scaled_image" name="IDR_PEOPLE_SEARCH_ACTION_CHAT_HOVER" file="common/chat_hover.png" />
       <structure type="chrome_scaled_image" name="IDR_PEOPLE_SEARCH_ACTION_CHAT_PRESSED" file="common/chat_pressed.png" />
     </structures>
   </release>
 </grit>