Optimize URLPrefix::BestURLPrefix

components/omnibox/browser/url_prefix.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.
 
 #ifndef COMPONENTS_OMNIBOX_BROWSER_URL_PREFIX_H_
 #define COMPONENTS_OMNIBOX_BROWSER_URL_PREFIX_H_
 
 #include <stddef.h>
 
 #include <vector>
 
 #include "base/strings/string16.h"
 
 struct URLPrefix;
 typedef std::vector<URLPrefix> URLPrefixes;
 
 // A URL prefix; combinations of schemes and (least significant) domain labels
 // that may be inferred from certain URL-like input strings.
 struct URLPrefix {
   URLPrefix(const base::string16& prefix, size_t num_components);
 
   // Returns a vector of URL prefixes sorted by descending number of components.
   static const URLPrefixes& GetURLPrefixes();
 
-  // Returns if the argument is a valid URL prefix.
-  static bool IsURLPrefix(const base::string16& prefix);
-
   // Returns the URL prefix of |text| with the most components, or NULL.
   // |prefix_suffix| (which may be empty) is appended to every attempted prefix,
   // which is useful for finding the innermost match of user input in a URL.
   // Performs case insensitive string comparison.
   static const URLPrefix* BestURLPrefix(const base::string16& text,
                                         const base::string16& prefix_suffix);
 
-  // A helper function for BestURLPrefix().  Returns true if |text| starts
-  // with |prefix| which is then followed by |prefix_suffix|.
-  // Performs case insensitive string comparison.
-  static bool PrefixMatch(const URLPrefix& prefix,
-                          const base::string16& text,
-                          const base::string16& prefix_suffix);
-
   // Sees if |text| is inlineable against either |input| or |fixed_up_input|,
   // returning the appropriate inline autocomplete offset or
   // base::string16::npos if |text| is not inlineable.
   // |allow_www_prefix_without_scheme| says whether to consider an input such
   // as "foo" to be allowed to match against text "www.foo.com".  This is
   // needed because sometimes the string we're matching against here can come
   // from a match's fill_into_edit, which can start with "www." without having
   // a protocol at the beginning, and we want to allow these matches to be
   // inlineable.  ("www." is not otherwise on the default prefix list.)
   static size_t GetInlineAutocompleteOffset(
       const base::string16& input,
       const base::string16& fixed_up_input,
       const bool allow_www_prefix_without_scheme,
       const base::string16& text);
 
   base::string16 prefix;
 
   // The number of URL components (scheme, domain label, etc.) in the prefix.
   // For example, "http://foo.com" and "www.bar.com" each have one component,
   // while "ftp://ftp.ftp.com" has two, and "mysite.com" has none.
   size_t num_components;
 };
 
 #endif  // COMPONENTS_OMNIBOX_BROWSER_URL_PREFIX_H_