Add more string_util functions to base namespace.

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 481 matching lines @@
       (*text)[position.next_whitespace_position] = L'\n';
       text->insert(position.next_whitespace_position, kCr);
     }
     text->erase(position.position, 1);
     hyphen_positions.pop_back();
   }
 
   // Adobe Reader also get rid of trailing spaces right before a CRLF.
   static const base::char16 kSpaceCrCn[] = {L' ', L'\r', L'\n', L'\0'};
   static const base::char16 kCrCn[] = {L'\r', L'\n', L'\0'};
-  ReplaceSubstringsAfterOffset(text, 0, kSpaceCrCn, kCrCn);
+  base::ReplaceSubstringsAfterOffset(text, 0, kSpaceCrCn, kCrCn);
 }
 
 // Replace CR/LF with just LF on POSIX.
 void FormatStringForOS(base::string16* text) {
 #if defined(OS_POSIX)
   static const base::char16 kCr[] = {L'\r', L'\0'};
   static const base::char16 kBlank[] = {L'\0'};
   base::ReplaceChars(*text, kCr, kBlank, text);
 #elif defined(OS_WIN)
   // Do nothing
@@ skipping 3518 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