Optimize URLPrefix::BestURLPrefix

components/omnibox/browser/url_prefix.h

Index: components/omnibox/browser/url_prefix.h
diff --git a/components/omnibox/browser/url_prefix.h b/components/omnibox/browser/url_prefix.h
index 96fd1ef951a94a2ba72307d9d09a25ed8d530bcf..b92936bf2beacb5ae75cba0e2ae0ccbb4e140d8e 100644
--- a/components/omnibox/browser/url_prefix.h
+++ b/components/omnibox/browser/url_prefix.h
@@ -22,9 +22,6 @@ struct URLPrefix {
   // 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.
@@ -32,13 +29,6 @@ struct URLPrefix {
   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.