Move elide_url to its own component

chrome/browser/ui/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 CHROME_BROWSER_UI_ELIDE_URL_H_
-#define CHROME_BROWSER_UI_ELIDE_URL_H_
-
-#include <string>
-
-#include "base/strings/string16.h"
-
-class GURL;
-
-namespace gfx {
-class FontList;
-}
-
-// 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);
-
-// 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);
-
-#endif  // CHROME_BROWSER_UI_ELIDE_URL_H_