Convert internal time format to Windows 1601 epoch on Linux & Mac....

chrome/browser/bookmarks/bookmark_codec.cc

 // Copyright (c) 2009 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 "app/l10n_util.h"
 #include "base/string_util.h"
@@ skipping 182 matching lines @@
     ids_missing_ = true;
 
   maximum_id_ = std::max(maximum_id_, id);
 
   std::wstring title;
   value.GetString(kNameKey, &title);
 
   std::wstring date_added_string;
   if (!value.GetString(kDateAddedKey, &date_added_string))
     date_added_string = Int64ToWString(Time::Now().ToInternalValue());
+  base::Time date_added = base::Time::FromInternalValue(
+      StringToInt64(WideToUTF16Hack(date_added_string)));
+#if !defined(OS_WIN)
+  // We changed the epoch for dates on Mac & Linux from 1970 to the Windows
+  // one of 1601. We assume any number we encounter from before 1970 is using
+  // the old format, so we need to add the delta to it.
+  if (date_added.ToInternalValue() <
+      base::Time::kWindowsEpochDeltaMicroseconds) {
+    date_added = base::Time::FromInternalValue(date_added.ToInternalValue() +
+        base::Time::kWindowsEpochDeltaMicroseconds);
+  }
+#endif
 
   std::wstring type_string;
   if (!value.GetString(kTypeKey, &type_string))
     return false;
 
   if (type_string != kTypeURL && type_string != kTypeFolder)
     return false;  // Unknown type.
 
   if (type_string == kTypeURL) {
     std::wstring url_string;
@@ skipping 35 matching lines @@
     if (parent)
       parent->Add(parent->GetChildCount(), node);
 
     UpdateChecksumWithFolderNode(id_string, title);
 
     if (!DecodeChildren(*static_cast<ListValue*>(child_values), node))
       return false;
   }
 
   node->SetTitle(title);
-  node->set_date_added(Time::FromInternalValue(
-      StringToInt64(WideToUTF16Hack(date_added_string))));
+  node->set_date_added(date_added);
   return true;
 }
 
 void BookmarkCodec::ReassignIDs(BookmarkNode* bb_node,
                                 BookmarkNode* other_node) {
   maximum_id_ = 0;
   ReassignIDsHelper(bb_node);
   ReassignIDsHelper(other_node);
   ids_reassigned_ = true;
 }
@@ skipping 31 matching lines @@
 
 void BookmarkCodec::InitializeChecksum() {
   MD5Init(&md5_context_);
 }
 
 void BookmarkCodec::FinalizeChecksum() {
   MD5Digest digest;
   MD5Final(&digest, &md5_context_);
   computed_checksum_ = MD5DigestToBase16(digest);
 }