Add error description to the DidFailProvisionalLoad callback.

chrome/renderer/chrome_content_renderer_client.h

Index: chrome/renderer/chrome_content_renderer_client.h
diff --git a/chrome/renderer/chrome_content_renderer_client.h b/chrome/renderer/chrome_content_renderer_client.h
index dca85ff561ad804b8e26f38728221aedcdbc5760..689d4c255e89345ea519ab1b41d88f575efa2bea 100644
--- a/chrome/renderer/chrome_content_renderer_client.h
+++ b/chrome/renderer/chrome_content_renderer_client.h
@@ -10,6 +10,7 @@
 
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
+#include "base/string16.h"
 #include "content/public/renderer/content_renderer_client.h"
 
 class ChromeRenderProcessObserver;
@@ -50,9 +51,11 @@ class ChromeContentRendererClient : public content::ContentRendererClient {
       WebKit::WebPlugin** plugin) OVERRIDE;
   virtual bool HasErrorPage(int http_status_code,
                             std::string* error_domain) OVERRIDE;
-  virtual std::string GetNavigationErrorHtml(
+  virtual void GetNavigationErrorStrings(
       const WebKit::WebURLRequest& failed_request,
-      const WebKit::WebURLError& error) OVERRIDE;
+      const WebKit::WebURLError& error,
+      std::string* error_html,
+      string16* error_description) OVERRIDE;
   virtual bool RunIdleHandlerWhenWidgetsHidden() OVERRIDE;
   virtual bool AllowPopup(const GURL& creator) OVERRIDE;
   virtual bool ShouldFork(WebKit::WebFrame* frame,