Revert of Move net::FormatUrl and friends outside of //net and into //components

components/secure_display/elide_url.h

+// 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.
+//
+// This file defines utility functions for eliding URLs.
+
+#ifndef COMPONENTS_SECURE_DISPLAY_ELIDE_URL_H_
+#define COMPONENTS_SECURE_DISPLAY_ELIDE_URL_H_
+
+#include <string>
+
+#include "base/strings/string16.h"
+
+class GURL;
+
+namespace gfx {
+class FontList;
+}
+
+namespace secure_display {
+
+// ElideUrl and Elide host require
+// gfx::GetStringWidthF which is not implemented in Android
+#if !defined(OS_ANDROID)
+// This function takes a GURL object and elides it. It returns a string
+// which composed of parts from subdomain, domain, path, filename and query.
+// A "..." is added automatically at the end if the elided string is bigger
+// than the |available_pixel_width|. For |available_pixel_width| == 0, a
+// formatted, but un-elided, string is returned. |languages| is a comma
+// separated list of ISO 639 language codes and is used to determine what
+// characters are understood by a user. It should come from
+// |prefs::kAcceptLanguages|.
+//
+// Note: in RTL locales, if the URL returned by this function is going to be
+// displayed in the UI, then it is likely that the string needs to be marked
+// as an LTR string (using base::i18n::WrapStringWithLTRFormatting()) so that it
+// is displayed properly in an RTL context. Please refer to
+// http://crbug.com/6487 for more information.
+base::string16 ElideUrl(const GURL& url,
+                        const gfx::FontList& font_list,
+                        float available_pixel_width,
+                        const std::string& languages);
+
+// This function takes a GURL object and elides the host to fit within
+// the given width. The function will never elide past the TLD+1 point,
+// but after that, will leading-elide the domain name to fit the width.
+// Example: http://sub.domain.com ---> "...domain.com", or "...b.domain.com"
+// depending on the width.
+base::string16 ElideHost(const GURL& host_url,
+                         const gfx::FontList& font_list,
+                         float available_pixel_width);
+#endif  // !defined(OS_ANDROID)
+
+// This is a convenience function for formatting a URL in a concise and
+// human-friendly way, to help users make security-related decisions (or in
+// other circumstances when people need to distinguish sites, origins, or
+// otherwise-simplified URLs from each other).
+//
+// Internationalized domain names (IDN) may be presented in Unicode if
+// |languages| accepts the Unicode representation (see |net::FormatUrl| for more
+// details on the algorithm).
+//
+// - 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 FormatUrlForSecurityDisplay(const GURL& origin,
+                                           const std::string& languages);
+
+}  // namespace secure_display
+
+#endif  // COMPONENTS_SECURE_DISPLAY_ELIDE_URL_H_