Create FormatUrlForSecurityDisplay helper function.

chrome/browser/ui/elide_url.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/elide_url.h"
 
 #include "base/logging.h"
 #include "base/strings/string_split.h"
 #include "base/strings/utf_string_conversions.h"
 #include "net/base/escape.h"
@@ skipping 283 matching lines @@
 
   const float pixel_width_url_domain = GetStringWidthF(url_domain, font_list);
   float subdomain_width = available_pixel_width - pixel_width_url_domain;
   if (subdomain_width <= 0)
     return base::string16(kEllipsisUTF16) + kDot + url_domain;
 
   const base::string16 elided_subdomain = ElideText(
       url_subdomain, font_list, subdomain_width, gfx::ELIDE_HEAD);
   return elided_subdomain + url_domain;
 }
+
+base::string16 FormatOriginForDisplay(const GURL& url,
+                                      const std::string& languages,
+                                      bool omit_scheme) {
+  if (!url.IsStandard() || url.is_empty() || !url.is_valid())
+    return net::FormatUrl(url, languages);
+
+  if (url.SchemeIsFile()) {
+    return (omit_scheme ? base::string16() : base::ASCIIToUTF16("file://")) +

[msw, 2015/05/29 00:18:51]

If we aren't omitting the scheme from a file URL, why not just return the entire
URL instead of rebuilding it from the scheme and path?

[palmer, 2015/05/29 17:52:12]

Because it might have non-origin material such as query string or fragment. And
the host is not part of the origin for a file: URL.

+           base::UTF8ToUTF16(url.path());
+  }
+
+  if (url.SchemeIsFileSystem()) {
+    const GURL* inner_url = url.inner_url();
+    const GURL& inner_origin = inner_url->GetOrigin();
+    if (inner_origin.SchemeIsFile()) {
+      return base::ASCIIToUTF16("filesystem:") +
+             (omit_scheme ? base::string16() : base::ASCIIToUTF16("file://")) +
+             base::UTF8ToUTF16(inner_url->path()) +
+             base::UTF8ToUTF16(url.path());
+    } else {

[msw, 2015/05/29 00:18:51]

nit: no else after return.

[palmer, 2015/05/29 17:52:12]

Done.

+      return base::ASCIIToUTF16("filesystem:") +
+             FormatOriginForDisplay(inner_origin, languages, omit_scheme);
+    }
+  }
+
+  const GURL origin = url.GetOrigin();
+  const std::string& scheme = origin.scheme();
+  const std::string& host = origin.host();
+  if (scheme.empty() || host.empty())
+    return net::FormatUrl(url, languages);
+
+  base::string16 result;
+  if (!omit_scheme)
+    result = base::UTF8ToUTF16(scheme) + base::ASCIIToUTF16("://");
+
+  result += base::UTF8ToUTF16(host);
+
+  const int port = origin.IntPort();
+  const int default_port = url::DefaultPortForScheme(origin.scheme().c_str(),
+                                                     origin.scheme().length());
+  if (origin.port().length() > 0 && port != 0 && port != default_port)
+    result += base::ASCIIToUTF16(":") + base::UTF8ToUTF16(origin.port());
+
+  return result;
+}