Install the chrome event log provider together with the browser.

chrome/installer/setup/uninstall.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.
 //
 // This file defines the methods useful for uninstalling Chrome.
 
 #include "chrome/installer/setup/uninstall.h"
 
 #include <windows.h>
 #include <stddef.h>
@@ skipping 1212 matching lines @@
   if (remove_all) {
     if (!InstallUtil::IsChromeSxSProcess() && is_chrome) {
       // Delete media player registry key that exists only in HKLM.
       // We don't delete this key in SxS uninstall or Chrome Frame uninstall
       // as we never set the key for those products.
       base::string16 reg_path(installer::kMediaPlayerRegPath);
       reg_path.push_back(base::FilePath::kSeparators[0]);
       reg_path.append(installer::kChromeExe);
       InstallUtil::DeleteRegistryKey(HKEY_LOCAL_MACHINE, reg_path,
                                      WorkItem::kWow64Default);
+
+      // Remove the event log provider registration as we are going to delete
+      // the file which serves the resources anyways.
+      DeRegisterEventLogProvider();

[grt (UTC plus 2), 2017/01/09 11:41:52]

i just noticed that this shouldn't be within the "if (remove_all)" block. it
just so happens that !remove_all is never true for system-level installs, so
DeRegisterEventLogProvider will get called at the right time. i think it makes
sense to move this up so that it comes before the "if (remove_all)" block.

     }
 
     // Unregister any dll servers that we may have registered for this
     // product.
     if (product_state) {
       std::vector<base::FilePath> com_dll_list;
       product.AddComDllList(&com_dll_list);
       base::FilePath dll_folder = installer_state.target_path().AppendASCII(
           product_state->version().GetString());
 
@@ skipping 130 matching lines @@
     // If we need a reboot to continue, schedule the parent directories for
     // deletion unconditionally. If they are not empty, the session manager
     // will not delete them on reboot.
     ScheduleParentAndGrandparentForDeletion(target_path);
   } else if (DeleteChromeDirectoriesIfEmpty(target_path) == DELETE_FAILED) {
     *uninstall_status = UNINSTALL_FAILED;
   }
 }
 
 }  // namespace installer