Use UintToString() to convert uint32 to string

pdf/pdfium/pdfium_engine.cc

 // Copyright (c) 2012 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_engine.h"
 
 #include <math.h>
 
 #include "base/i18n/icu_encoding_detection.h"
 #include "base/i18n/icu_string_conversions.h"
@@ skipping 1562 matching lines @@
   if (!output_doc)
     return pp::Buffer_Dev();
 
   SaveSelectedFormForPrint();
 
   std::string page_number_str;
   for (uint32_t index = 0; index < page_range_count; ++index) {
     if (!page_number_str.empty())
       page_number_str.append(",");
     page_number_str.append(
-        base::IntToString(page_ranges[index].first_page_number + 1));
+        base::UintToString(page_ranges[index].first_page_number + 1));
     if (page_ranges[index].first_page_number !=
             page_ranges[index].last_page_number) {
       page_number_str.append("-");
       page_number_str.append(
-          base::IntToString(page_ranges[index].last_page_number + 1));
+          base::UintToString(page_ranges[index].last_page_number + 1));
     }
   }
 
   std::vector<uint32_t> page_numbers =
       GetPageNumbersFromPrintPageNumberRange(page_ranges, page_range_count);
   for (size_t i = 0; i < page_numbers.size(); ++i) {
     uint32_t page_number = page_numbers[i];
     pages_[page_number]->GetPage();
     if (!IsPageVisible(page_numbers[i]))
       pages_[page_number]->Unload();
@@ skipping 2463 matching lines @@
     double* height) {
   FPDF_DOCUMENT doc = FPDF_LoadMemDocument(pdf_buffer, pdf_buffer_size, NULL);
   if (!doc)
     return false;
   bool success = FPDF_GetPageSizeByIndex(doc, page_number, width, height) != 0;
   FPDF_CloseDocument(doc);
   return success;
 }
 
 }  // namespace chrome_pdf