Remove the kHideFullscreenToolbar Preference

chrome/browser/prefs/browser_prefs.cc

Index: chrome/browser/prefs/browser_prefs.cc
diff --git a/chrome/browser/prefs/browser_prefs.cc b/chrome/browser/prefs/browser_prefs.cc
index d101a40a92f2a8abea33882a3242cd89a2bc3074..e4cce0ee9544a56789e2be55495496590a0dbbbc 100644
--- a/chrome/browser/prefs/browser_prefs.cc
+++ b/chrome/browser/prefs/browser_prefs.cc
@@ -715,20 +715,6 @@ void MigrateObsoleteBrowserPrefs(Profile* profile, PrefService* local_state) {
 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);