Correct const accessors in base/values.(h|cc), Part II (ListValue)

chrome/browser/bookmarks/bookmark_codec.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 "chrome/browser/bookmarks/bookmark_codec.h"
 
 #include <algorithm>
 
 #include "base/string_number_conversions.h"
 #include "base/string_util.h"
@@ skipping 185 matching lines @@
       l10n_util::GetStringUTF16(IDS_BOOKMARK_BAR_OTHER_FOLDER_NAME));
   mobile_folder_node->SetTitle(
         l10n_util::GetStringUTF16(IDS_BOOKMARK_BAR_MOBILE_FOLDER_NAME));
 
   return true;
 }
 
 bool BookmarkCodec::DecodeChildren(const ListValue& child_value_list,
                                    BookmarkNode* parent) {
   for (size_t i = 0; i < child_value_list.GetSize(); ++i) {
-    Value* child_value;
+    const Value* child_value;
     if (!child_value_list.Get(i, &child_value))
       return false;
 
     if (child_value->GetType() != Value::TYPE_DICTIONARY)
       return false;
 
-    DecodeNode(*static_cast<DictionaryValue*>(child_value), parent, NULL);
+    DecodeNode(*static_cast<const DictionaryValue*>(child_value), parent, NULL);
   }
   return true;
 }
 
 bool BookmarkCodec::DecodeNode(const DictionaryValue& value,
                                BookmarkNode* parent,
                                BookmarkNode* node) {
   // If no |node| is specified, we'll create one and add it to the |parent|.
   // Therefore, in that case, |parent| must be non-NULL.
   if (!node && !parent) {
@@ skipping 145 matching lines @@
 
 void BookmarkCodec::InitializeChecksum() {
   base::MD5Init(&md5_context_);
 }
 
 void BookmarkCodec::FinalizeChecksum() {
   base::MD5Digest digest;
   base::MD5Final(&digest, &md5_context_);
   computed_checksum_ = base::MD5DigestToBase16(digest);
 }