Update type check in TrackZoomLevelsFromParent.

OffTheRecordProfileImpl::TrackZoomLevelsFromParent checks if the parent
profile type is not incognito, which can never be true since the parent
of an OTR is always regular.

The unnecessary DCHECK is removed.

Bug: 968028, 1074201
Change-Id: I274f4641f1452a3547f9337ca5026496a9520bd4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2203002Reviewed-by: Mihai Sardarescu <msarda@chromium.org>
Commit-Queue: Ramin Halavati <rhalavati@chromium.org>
Cr-Commit-Position: refs/heads/master@{#770595}

chrome/browser/profiles/off_the_record_profile_impl.cc

@@ -223,8 +223,6 @@ OffTheRecordProfileImpl::~OffTheRecordProfileImpl() {
 
 #if !defined(OS_ANDROID)
 void OffTheRecordProfileImpl::TrackZoomLevelsFromParent() {
-  DCHECK(!profile_->IsIncognitoProfile());
-
   // Here we only want to use zoom levels stored in the main-context's default
   // storage partition. We're not interested in zoom levels in special
   // partitions, e.g. those used by WebViewGuests.