New Sad Tab strings.

chrome/browser/ui/sad_tab.h

Index: chrome/browser/ui/sad_tab.h
diff --git a/chrome/browser/ui/sad_tab.h b/chrome/browser/ui/sad_tab.h
index 28698d0a78a3ef905a2c0602796a6f670d4fc728..50350cc1b5e4b414281fa042e56ef52391c6d01d 100644
--- a/chrome/browser/ui/sad_tab.h
+++ b/chrome/browser/ui/sad_tab.h
@@ -38,6 +38,10 @@ class SadTab {
   int GetButtonTitle();
   int GetHelpLinkTitle();
 
+  // Returns the resource string Id for bullet point |line_id| or 0 if no
+  // message should be displayed for the |line_id|. Line ids count from 0.
+  int GetSubMessage(size_t line_id);
+
   // Returns the target of the "Learn more" link. Use it for the context menu
   // and to show the URL on hover, but call PerformAction() for regular clicks.
   const char* GetHelpLinkURL();