Use IsIndependentOffTheRecordProfile() in Browser destruction.

Just to improve readability, no behavioral change.

Bug: 968028
Change-Id: I0801440b45f0c4bf59c01956658f05ca5f6a5398
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1660664
Commit-Queue: Peter Kasting <pkasting@chromium.org>
Reviewed-by: Peter Kasting <pkasting@chromium.org>
Cr-Commit-Position: refs/heads/master@{#669705}

chrome/browser/ui/browser.cc

@@ -572,8 +572,7 @@ Browser::~Browser() {
   // destroyed directly by Browser (e.g. for offscreen tabs,
   // https://crbug.com/664351).
   if (profile_->IsOffTheRecord() &&
-      profile_->GetOriginalProfile()->HasOffTheRecordProfile() &&
-      profile_->GetOriginalProfile()->GetOffTheRecordProfile() == profile_ &&
+      !profile_->IsIndependentOffTheRecordProfile() &&
       !BrowserList::IsIncognitoSessionInUse(profile_) &&
       !profile_->GetOriginalProfile()->IsSystemProfile()) {
     if (profile_->IsGuestSession()) {