Implement app banner info bars on desktop.

chrome/app/theme/theme_resources.grd

Index: chrome/app/theme/theme_resources.grd
diff --git a/chrome/app/theme/theme_resources.grd b/chrome/app/theme/theme_resources.grd
index eca9ac74fc12914792506a4ba93203a6d5d754bb..2decb1618aa7b329914b50b09be47991c1e6e450 100644
--- a/chrome/app/theme/theme_resources.grd
+++ b/chrome/app/theme/theme_resources.grd
@@ -399,6 +399,7 @@
       </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">