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..3939e6f075eb6e83f89c7a28a7a737342425a229 100644
--- a/chrome/common/localized_error.cc
+++ b/chrome/common/localized_error.cc
@@ -529,6 +529,12 @@ void LocalizedError::GetStrings(const WebKit::WebURLError& error,
   error_strings->SetString("heading",
       l10n_util::GetStringUTF16(options.heading_resource_id));
 
+  std::string icon_class = (error_code == net::ERR_INTERNET_DISCONNECTED &&
+                            error_domain == net::kErrorDomain)
+                               ? "icon-offline"
+                               : "icon-generic";
+  error_strings->SetString("iconClass", icon_class);
+
   base::DictionaryValue* summary = new base::DictionaryValue;
   summary->SetString("msg",
       l10n_util::GetStringUTF16(options.summary_resource_id));