Install the chrome event log provider together with the browser.

chrome/installer/setup/uninstall.cc

Index: chrome/installer/setup/uninstall.cc
diff --git a/chrome/installer/setup/uninstall.cc b/chrome/installer/setup/uninstall.cc
index 3365f2a0b7bb852b8270d081a74cb0d67bc125bf..66717708e20d25eaaa129914ec16dd207039e0d1 100644
--- a/chrome/installer/setup/uninstall.cc
+++ b/chrome/installer/setup/uninstall.cc
@@ -1230,6 +1230,10 @@ InstallStatus UninstallProduct(const InstallationState& original_state,
       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), 2016/11/22 10:41:26]

could you try uninstalling while eventvwr is showing a Chrome event? i suspect
it will make DeleteChromeFilesAndFolders return DELETE_FAILED, which would be
unfortunate. if it does, we may need to move the provider dll into a temp dir
and schedule it for delete after reboot.

[pastarmovj, 2016/11/23 14:27:26]

I checked that actually - the file is indeed held hostage of the event viewer
while it is running. I thought we were already doing this for the whole contents
of the versioned folder and therefore didn't really thought about doing extra
work in this regard here. Can you please advice me what do I need to do in this
regard?

     }
 
     // Unregister any dll servers that we may have registered for this