Add "Unicode" suffixes to some functions of WTF::String and WTF::StringImpl.

third_party/WebKit/Source/platform/fonts/shaping/CaseMappingHarfBuzzBufferFiller.cpp

 // Copyright 2016 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.
 
 #include "CaseMappingHarfBuzzBufferFiller.h"
 
 #include "platform/wtf/text/WTFString.h"
 
 namespace blink {
 
@@ skipping 14 matching lines @@
     unsigned buffer_length,
     unsigned start_index,
     unsigned num_characters)
     : harf_buzz_buffer_(harf_buzz_buffer) {
   if (case_map_intend == CaseMapIntend::kKeepSameCase) {
     hb_buffer_add_utf16(harf_buzz_buffer_, ToUint16(buffer), buffer_length,
                         start_index, num_characters);
   } else {
     String case_mapped_text;
     if (case_map_intend == CaseMapIntend::kUpperCase) {
-      case_mapped_text = String(buffer, buffer_length).Upper(locale);
+      case_mapped_text = String(buffer, buffer_length).UpperUnicode(locale);
     } else {
-      case_mapped_text = String(buffer, buffer_length).Lower(locale);
+      case_mapped_text = String(buffer, buffer_length).LowerUnicode(locale);
     }
 
     if (case_mapped_text.length() != buffer_length) {
       FillSlowCase(case_map_intend, locale, buffer, buffer_length, start_index,
                    num_characters);
       return;
     }
 
     ASSERT(case_mapped_text.length() == buffer_length);
     ASSERT(!case_mapped_text.Is8Bit());
@@ skipping 16 matching lines @@
   hb_buffer_add_utf16(harf_buzz_buffer_, ToUint16(buffer), buffer_length,
                       start_index, 0);
 
   for (unsigned char_index = start_index;
        char_index < start_index + num_characters;) {
     unsigned new_char_index = char_index;
     U16_FWD_1(buffer, new_char_index, num_characters);
     String char_by_char(&buffer[char_index], new_char_index - char_index);
     String case_mapped_char;
     if (case_map_intend == CaseMapIntend::kUpperCase)
-      case_mapped_char = char_by_char.Upper(locale);
+      case_mapped_char = char_by_char.UpperUnicode(locale);
     else
-      case_mapped_char = char_by_char.Lower(locale);
+      case_mapped_char = char_by_char.LowerUnicode(locale);
 
     for (unsigned j = 0; j < case_mapped_char.length();) {
       UChar32 codepoint = 0;
       U16_NEXT(case_mapped_char.Characters16(), j, case_mapped_char.length(),
                codepoint);
       // Add all characters of the case mapping result at the same cluster
       // position.
       hb_buffer_add(harf_buzz_buffer_, codepoint, char_index);
     }
     char_index = new_char_index;
   }
 
   // Record post-context
   hb_buffer_add_utf16(harf_buzz_buffer_, ToUint16(buffer), buffer_length,
                       start_index + num_characters, 0);
 }
 
 }  // namespace blink