Correct const accessors in base/values.(h|cc)

chrome/renderer/chrome_mock_render_thread.cc

 // Copyright (c) 2011 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 "chrome/renderer/chrome_mock_render_thread.h"
 
 #include <fcntl.h>
 
 #include "base/file_util.h"
 #include "base/process_util.h"
@@ skipping 145 matching lines @@
       !job_settings.GetInteger(printing::kSettingDuplexMode, NULL) ||
       !job_settings.GetInteger(printing::kSettingCopies, NULL) ||
       !job_settings.GetString(printing::kPreviewUIAddr, &dummy_string) ||
       !job_settings.GetInteger(printing::kPreviewRequestID, NULL) ||
       !job_settings.GetInteger(printing::kSettingMarginsType, &margins_type)) {
     return;
   }
 
   // Just return the default settings.
   if (printer_.get()) {
-    ListValue* page_range_array;
+    const ListValue* page_range_array;
     printing::PageRanges new_ranges;
     if (job_settings.GetList(printing::kSettingPageRange, &page_range_array)) {
       for (size_t index = 0; index < page_range_array->GetSize(); ++index) {
         base::DictionaryValue* dict;
         if (!page_range_array->GetDictionary(index, &dict))
           continue;
         printing::PageRange range;
         if (!dict->GetInteger(printing::kSettingPageRangeFrom, &range.from) ||
             !dict->GetInteger(printing::kSettingPageRangeTo, &range.to)) {
           continue;
@@ skipping 14 matching lines @@
   print_dialog_user_response_ = response;
 }
 
 void ChromeMockRenderThread::set_print_preview_cancel_page_number(int page) {
   print_preview_cancel_page_number_ = page;
 }
 
 int ChromeMockRenderThread::print_preview_pages_remaining() {
   return print_preview_pages_remaining_;
 }