[win] Enable ModuleDatabase behind a flag.

chrome/browser/chrome_browser_main_win.h

 // 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.
 
 // Contains functions used by BrowserMain() that are win32-specific.
 
 #ifndef CHROME_BROWSER_CHROME_BROWSER_MAIN_WIN_H_
 #define CHROME_BROWSER_CHROME_BROWSER_MAIN_WIN_H_
 
 #include "base/files/file_path_watcher.h"
 #include "base/macros.h"
 #include "chrome/browser/chrome_browser_main.h"
 #include "third_party/kasko/kasko_features.h"
 
 class DidRunUpdater;
+class ModuleWatcher;
 
 namespace base {
 class CommandLine;
 }
 
 // Handle uninstallation when given the appropriate the command-line switch.
 // If |chrome_still_running| is true a modal dialog will be shown asking the
 // user to close the other chrome instance.
 int DoUninstallTasks(bool chrome_still_running);
 
@@ skipping 45 matching lines @@
 
  private:
 #if defined(GOOGLE_CHROME_BUILD)
   std::unique_ptr<DidRunUpdater> did_run_updater_;
 #endif
 #if BUILDFLAG(ENABLE_KASKO)
   // Cleans up Kasko crash reports that exceeded the maximum upload attempts.
   base::FilePathWatcher failed_kasko_crash_report_watcher_;
 #endif
 
+  std::unique_ptr<ModuleWatcher> module_watcher_;
+
   DISALLOW_COPY_AND_ASSIGN(ChromeBrowserMainPartsWin);
 };
 
 #endif  // CHROME_BROWSER_CHROME_BROWSER_MAIN_WIN_H_