Move 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 454 matching lines @@
   const base::char16 kPdfiumHyphenEOL = 0xfffe;
 
   for (size_t i = 0; i < text->size(); ++i) {
     const base::char16& current_char = (*text)[i];
     if (current_char == kPdfiumHyphenEOL) {
       if (current_hyphen_position_is_valid)
         hyphen_positions.push_back(current_hyphen_position);
       current_hyphen_position = HyphenPosition();
       current_hyphen_position.position = i;
       current_hyphen_position_is_valid = true;
-    } else if (IsWhitespace(current_char)) {
+    } else if (base::IsUnicodeWhitespace(current_char)) {
       if (current_hyphen_position_is_valid) {
         if (current_char != L'\r' && current_char != L'\n')
           current_hyphen_position.next_whitespace_position = i;
         hyphen_positions.push_back(current_hyphen_position);
         current_hyphen_position_is_valid = false;
       }
     }
   }
   if (current_hyphen_position_is_valid)
     hyphen_positions.push_back(current_hyphen_position);
@@ skipping 3545 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