Update from https://crrev.com/327068

base/win/shortcut.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 "base/win/shortcut.h"
 
 #include <shellapi.h>
 #include <shlobj.h>
 #include <propkey.h>
 
@@ skipping 24 matching lines @@
                                           CLSCTX_INPROC_SERVER)) ||
       FAILED(i_persist_file->QueryFrom(i_shell_link->get())) ||
       (shortcut && FAILED((*i_persist_file)->Load(shortcut, STGM_READWRITE)))) {
     i_shell_link->Release();
     i_persist_file->Release();
   }
 }
 
 }  // namespace
 
+ShortcutProperties::ShortcutProperties()
+    : icon_index(-1), dual_mode(false), options(0U) {
+}
+
+ShortcutProperties::~ShortcutProperties() {
+}
+
 bool CreateOrUpdateShortcutLink(const FilePath& shortcut_path,
                                 const ShortcutProperties& properties,
                                 ShortcutOperation operation) {
   base::ThreadRestrictions::AssertIOAllowed();
 
   // A target is required unless |operation| is SHORTCUT_UPDATE_EXISTING.
   if (operation != SHORTCUT_UPDATE_EXISTING &&
       !(properties.options & ShortcutProperties::PROPERTIES_TARGET)) {
     NOTREACHED();
     return false;
@@ skipping 271 matching lines @@
   if (GetVersion() < VERSION_WIN7)
     return false;
 
   int result = reinterpret_cast<int>(ShellExecute(NULL, L"taskbarunpin",
       shortcut, NULL, NULL, 0));
   return result > 32;
 }
 
 }  // namespace win
 }  // namespace base