Document pixel dimension limit for WallpaperImage policy.

components/policy/resources/policy_templates.json

Index: components/policy/resources/policy_templates.json
diff --git a/components/policy/resources/policy_templates.json b/components/policy/resources/policy_templates.json
index 6df8e8f4e458b65e612c6c5c2f54370849532438..c7901ad3728b083c78d750c419714d0649504ea3 100644
--- a/components/policy/resources/policy_templates.json
+++ b/components/policy/resources/policy_templates.json
@@ -6509,7 +6509,7 @@
       'caption': '''Wallpaper image''',
       'desc': '''Configure wallpaper image.
 
-      This policy allows you to configure the wallpaper image that is shown on the desktop and on the login screen background for the user. The policy is set by specifying the URL from which <ph name="PRODUCT_OS_NAME">$2<ex>Google Chrome OS</ex></ph> can download the wallpaper image and a cryptographic hash used to verify the integrity of the download. The image must be in JPEG format, its size must not exceed 16MB. The URL must be accessible without any authentication.
+      This policy allows you to configure the wallpaper image that is shown on the desktop and on the login screen background for the user. The policy is set by specifying the URL from which <ph name="PRODUCT_OS_NAME">$2<ex>Google Chrome OS</ex></ph> can download the wallpaper image and a cryptographic hash used to verify the integrity of the download. The image must be in JPEG format, its file size must not exceed 16MB and its dimension must not exceed 32 Megapixels. The URL must be accessible without any authentication.

[bartfab (slow), 2014/08/06 14:35:45]

Nit: s/Megapixels/megapixels/

[Thiemo Nagel, 2014/08/06 15:23:56]

Done.

 
       The wallpaper image is downloaded and cached. It will be re-downloaded whenever the URL or the hash changes.