Move StringToLowerASCII to base namespace

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 171 matching lines @@
       // Remove the extra NULL character at end.
       // Otherwise, find() will not return any matches.
       if (targets[i].url.size() > 0 &&
           targets[i].url[targets[i].url.size() - 1] == '\0') {
         targets[i].url.resize(targets[i].url.size() - 1);
       }
       // There should only ever be one NULL character
       DCHECK(targets[i].url[targets[i].url.size() - 1] != '\0');
 
       // PDFium may change the case of generated links.
-      std::string lowerCaseURL = StringToLowerASCII(targets[i].url);
-      std::string lowerCaseText = StringToLowerASCII(text_utf8);
+      std::string lowerCaseURL = base::StringToLowerASCII(targets[i].url);
+      std::string lowerCaseText = base::StringToLowerASCII(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 265 matching lines @@
       new_left, new_top, new_right - new_left + 1, new_bottom - new_top + 1);
 }
 
 PDFiumPage::Link::Link() {
 }
 
 PDFiumPage::Link::~Link() {
 }
 
 }  // namespace chrome_pdf