Remove the kHideFullscreenToolbar Preference

chrome/browser/prefs/browser_prefs.cc

 // Copyright 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.
 
 #include "chrome/browser/prefs/browser_prefs.h"
 
 #include <string>
 
 #include "base/files/file_util.h"
 #include "base/metrics/histogram_macros.h"
@@ skipping 697 matching lines @@
   // Added 11/2016
   local_state->ClearPref(prefs::kTouchscreenEnabled);
   local_state->ClearPref(prefs::kTouchpadEnabled);
 #endif  // defined(OS_CHROMEOS)
 }
 
 // This method should be periodically pruned of year+ old migrations.
 void MigrateObsoleteProfilePrefs(Profile* profile) {
   PrefService* profile_prefs = profile->GetPrefs();
 
-#if defined(OS_MACOSX)
-  // Migrate the value of kHideFullscreenToolbar to kShowFullscreenToolbar if
-  // it was set by the user. See crbug.com/590827.
-  // Added 03/2016.
-  const PrefService::Preference* hide_pref =
-      profile_prefs->FindPreference(prefs::kHideFullscreenToolbar);
-  if (!hide_pref->IsDefaultValue()) {
-    bool hide_pref_value =
-        profile_prefs->GetBoolean(prefs::kHideFullscreenToolbar);
-    profile_prefs->SetBoolean(prefs::kShowFullscreenToolbar, !hide_pref_value);
-    profile_prefs->ClearPref(prefs::kHideFullscreenToolbar);
-  }
-#endif
-
 #if BUILDFLAG(ENABLE_GOOGLE_NOW)
   // Added 3/2016.
   profile_prefs->ClearPref(kGoogleGeolocationAccessEnabled);
 #endif
 
   // Added 4/2016.
   if (!profile_prefs->GetBoolean(kCheckDefaultBrowser)) {
     // Seed kDefaultBrowserLastDeclined with the install date.
     metrics::MetricsService* metrics_service =
         g_browser_process->metrics_service();
@@ skipping 76 matching lines @@
   // default values for all prefs locally. Since we already have the defaults it
   // would be wasteful to request them from the service by connecting to the
   // DEFAULT_STORE.
   // TODO(sammc): Once we have this distinction, connect to the default pref
   // store here (by erasing it from |pref_stores|).
   pref_stores.erase(PrefValueStore::USER_STORE);
   return pref_stores;
 }
 
 }  // namespace chrome