Create FormatUrlForSecurityDisplay helper function.

chrome/browser/ui/elide_url.h

Index: chrome/browser/ui/elide_url.h
diff --git a/chrome/browser/ui/elide_url.h b/chrome/browser/ui/elide_url.h
index bd5321a633fbfb5513374903427ca6353be26ada..5df634c0e3779a3ade840c0b2b2a8ac20819ae34 100644
--- a/chrome/browser/ui/elide_url.h
+++ b/chrome/browser/ui/elide_url.h
@@ -45,4 +45,15 @@ base::string16 ElideHost(const GURL& host_url,
                          const gfx::FontList& font_list,
                          float available_pixel_width);
 
+// This is a convenience function for formatting a URL as an origin in a concise
+// and human-friendly way. Use this instead of |net::FormatUrl| when the reader
+// needs only to understand the origin (rather than the entire URL).
+//
+// - Omits the path for standard schemes, excepting file and filesystem.
+// - Omits the port if it is the default for the scheme.
+//
+// Do not use this for URLs which will be parsed or sent to other applications.
+base::string16 FormatOriginForDisplay(const GURL& origin,
+                                      const std::string& languages);
+
 #endif  // CHROME_BROWSER_UI_ELIDE_URL_H_