MD5Update function uses StringPiece instead of raw buffer.

chrome/browser/bookmarks/bookmark_codec.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/browser/bookmarks/bookmark_codec.h"
 
 #include <algorithm>
 
 #include "base/string_number_conversions.h"
 #include "base/string_util.h"
@@ skipping 319 matching lines @@
 }
 
 void BookmarkCodec::ReassignIDsHelper(BookmarkNode* node) {
   DCHECK(node);
   node->set_id(++maximum_id_);
   for (int i = 0; i < node->child_count(); ++i)
     ReassignIDsHelper(node->GetChild(i));
 }
 
 void BookmarkCodec::UpdateChecksum(const std::string& str) {
-  base::MD5Update(&md5_context_, str.data(), str.length() * sizeof(char));
+  base::MD5Update(&md5_context_, str);
 }
 
 void BookmarkCodec::UpdateChecksum(const string16& str) {
-  base::MD5Update(&md5_context_, str.data(), str.length() * sizeof(char16));
+  base::MD5Update(&md5_context_,
+                  base::StringPiece(
+                      reinterpret_cast<const char*>(str.data()),
+                      str.length() * sizeof(str[0])));
 }
 
 void BookmarkCodec::UpdateChecksumWithUrlNode(const std::string& id,
                                               const string16& title,
                                               const std::string& url) {
   DCHECK(IsStringUTF8(url));
   UpdateChecksum(id);
   UpdateChecksum(title);
   UpdateChecksum(kTypeURL);
   UpdateChecksum(url);
 }
 
 void BookmarkCodec::UpdateChecksumWithFolderNode(const std::string& id,
                                                  const string16& title) {
   UpdateChecksum(id);
   UpdateChecksum(title);
   UpdateChecksum(kTypeFolder);
 }
 
 void BookmarkCodec::InitializeChecksum() {
   base::MD5Init(&md5_context_);
 }
 
 void BookmarkCodec::FinalizeChecksum() {
   base::MD5Digest digest;
   base::MD5Final(&digest, &md5_context_);
   computed_checksum_ = base::MD5DigestToBase16(digest);
 }