Convert remaining StringToLowerASCII to ToLowerASCII

pdf/pdfium/pdfium_page.cc

 // Copyright (c) 2010 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 "pdf/pdfium/pdfium_page.h"
 
 #include <math.h>
 
 #include "base/logging.h"
 #include "base/strings/string_number_conversions.h"
@@ skipping 186 matching lines @@
     text_nodes->Append(CreateURLNode(text_utf8, targets[0].url));
   } else if (area == WEBLINK_AREA && !link) {
     size_t start = 0;
     for (size_t i = 0; i < targets.size(); ++i) {
       // If there is an extra NULL character at end, find() will not return any
       // matches. There should not be any though.
       if (!targets[i].url.empty())
         DCHECK(targets[i].url[targets[i].url.size() - 1] != '\0');
 
       // PDFium may change the case of generated links.
-      std::string lowerCaseURL = base::StringToLowerASCII(targets[i].url);
-      std::string lowerCaseText = base::StringToLowerASCII(text_utf8);
+      std::string lowerCaseURL = base::ToLowerASCII(targets[i].url);
+      std::string lowerCaseText = base::ToLowerASCII(text_utf8);
       size_t pos = lowerCaseText.find(lowerCaseURL, start);
       size_t length = targets[i].url.size();
       if (pos == std::string::npos) {
         // Check if the link is a "mailto:" URL
         if (lowerCaseURL.compare(0, 7, "mailto:") == 0) {
           pos = lowerCaseText.find(lowerCaseURL.substr(7), start);
           length -= 7;
         }
 
         if (pos == std::string::npos) {
@@ skipping 289 matching lines @@
   page_->loading_count_--;
 }
 
 PDFiumPage::Link::Link() {
 }
 
 PDFiumPage::Link::~Link() {
 }
 
 }  // namespace chrome_pdf