Revert of Remove some legacy versions of StartsWith and EndsWith.

base/strings/string_util.h

 // Copyright 2013 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 working with strings.
 
 #ifndef BASE_STRINGS_STRING_UTIL_H_
 #define BASE_STRINGS_STRING_UTIL_H_
 
 #include <ctype.h>
@@ skipping 363 matching lines @@
 
 // DEPRECATED. Returns true if str starts/ends with search, or false otherwise.
 // TODO(brettw) remove in favor of the "enum" versions above.
 inline bool StartsWithASCII(const std::string& str,
                             const std::string& search,
                             bool case_sensitive) {
   return StartsWith(StringPiece(str), StringPiece(search),
                     case_sensitive ? CompareCase::SENSITIVE
                                    : CompareCase::INSENSITIVE_ASCII);
 }
+BASE_EXPORT bool StartsWith(const string16& str,
+                            const string16& search,
+                            bool case_sensitive);
+inline bool EndsWith(const std::string& str,
+                     const std::string& search,
+                     bool case_sensitive) {
+  return EndsWith(StringPiece(str), StringPiece(search),
+                  case_sensitive ? CompareCase::SENSITIVE
+                                 : CompareCase::INSENSITIVE_ASCII);
+}
+BASE_EXPORT bool EndsWith(const string16& str,
+                          const string16& search,
+                          bool case_sensitive);
 
 // Determines the type of ASCII character, independent of locale (the C
 // library versions will change based on locale).
 template <typename Char>
 inline bool IsAsciiWhitespace(Char c) {
   return c == ' ' || c == '\r' || c == '\n' || c == '\t';
 }
 template <typename Char>
 inline bool IsAsciiAlpha(Char c) {
   return ((c >= 'A') && (c <= 'Z')) || ((c >= 'a') && (c <= 'z'));
@@ skipping 113 matching lines @@
 
 #if defined(OS_WIN)
 #include "base/strings/string_util_win.h"
 #elif defined(OS_POSIX)
 #include "base/strings/string_util_posix.h"
 #else
 #error Define string operations appropriately for your platform
 #endif
 
 #endif  // BASE_STRINGS_STRING_UTIL_H_