Use dinosaur icon on "you are offline" error page.

chrome/common/localized_error.cc

Index: chrome/common/localized_error.cc
diff --git a/chrome/common/localized_error.cc b/chrome/common/localized_error.cc
index 136607a7de7a27b85b1258ff75fb89e8ef225827..50f76b4da17eef1e8f2ac15272dba69b23170b76 100644
--- a/chrome/common/localized_error.cc
+++ b/chrome/common/localized_error.cc
@@ -529,6 +529,9 @@ void LocalizedError::GetStrings(const WebKit::WebURLError& error,
   error_strings->SetString("heading",
       l10n_util::GetStringUTF16(options.heading_resource_id));
 
+  error_strings->SetBoolean("isOffline",
+                            error_code == net::ERR_INTERNET_DISCONNECTED);

[mmenke, 2013/07/24 14:54:17]

Rather than using a bool, suggest a string, since it scales better, if we ever
add icons for different pages.

Also, you should check the error_domain is net::kErrorDomain as well.  There's a
check below on it, and you may want to move your logic down there (Or not).

[newt (away), 2013/07/24 17:30:52]

Shouldn't error_code == net::ERR_INTERNET_DISCONNECTED imply that error_domain
== net::kErrorDomain?

[mmenke, 2013/07/24 17:51:04]

In practice, that's currently the case.  However, long term, there's no
guarantee that some other error domain will never use the same error code.

+
   base::DictionaryValue* summary = new base::DictionaryValue;
   summary->SetString("msg",
       l10n_util::GetStringUTF16(options.summary_resource_id));