Added a message that suggest to configure a proxy for a network.

chrome/app/generated_resources.grd

Index: chrome/app/generated_resources.grd
diff --git a/chrome/app/generated_resources.grd b/chrome/app/generated_resources.grd
index 547764238e599d77a1e4c3733e3630b95501cb30..eb2def7e5bb55892dd89d99d273263d89e369237 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -12592,6 +12592,9 @@ Some features may be unavailable.  Please check that the profile exists and you
       <message name="IDS_NETWORK_SELECTION_SELECT" desc="Label for network selection dropdown">
         Select a network:
       </message>
+      <message name="IDS_ANOTHER_NETWORK_SELECTION_SELECT" desc="Label for network selection dropdown">

[Nikita (slow), 2012/04/25 10:29:50]

nit: also might add in description "(on network error screen)"

[ygorshenin1, 2012/04/25 13:53:13]

Done.

+        Or select another network:
+      </message>
       <message name="IDS_LANGUAGE_SELECTION_SELECT" desc="Label for language selection dropdown">
         Select your language:
       </message>
@@ -15338,11 +15341,17 @@ Battery full
         To use the network <ph name="NETWORK_ID">$1<ex>Adelaide Airport Wireless</ex></ph>, first complete your connection to the Internet below.
       </message>
       <message name="IDS_LOGIN_MAYBE_CAPTIVE_PORTAL_TITLE" desc="An offline message title shown when we suggest that user may be behind the captive portal.">
-       Tips for accessing this network
+        Network not available
       </message>
       <message name="IDS_LOGIN_MAYBE_CAPTIVE_PORTAL" desc="An offline message shown when we suggest that user may be behind the captive portal. Translation note: enter as Guest - could also be said enter as Guest user. Word user may be added to the translation if needed.">
         To use <ph name="NETWORK_ID">$1<ex>&gt;b&lt;Public Wifi&gt;/b&lt;</ex></ph> you may first need to <ph name="LINK_START">$2<ex>&gt;a&lt;</ex></ph>visit the network's sign-in page<ph name="LINK_END">$3<ex>&gt;/a&lt;</ex></ph>, which will open automatically in a few seconds. If it didn't happen, network can't be used for the Internet connection.
       </message>
+      <message name="IDS_LOGIN_MAYBE_CAPTIVE_PORTAL_PROXY" desc="An offline mssage shown when we suggest that user should configure the proxy.">
+	If you use a proxy server, check your proxy settings or
+        contact your network administrator to make sure the proxy
+        server is working. If you don't believe you should be using a
+        proxy server, adjust your <ph name="LINK_START">$1<ex>&gt;a&lt;</ex></ph>proxy settings<ph name="LINK_END">$2<ex>&gt;/a&lt;</ex></ph>.
+      </message>
       <message name="IDS_LOGIN_MAYBE_CAPTIVE_PORTAL_NETWORK_SELECT" desc="An offline message shown when we suggest that user may select other network.">
         You may also select another network.
       </message>