Removing obsolete flag.

Bug: None
Cq-Include-Trybots: master.tryserver.chromium.mac:ios-simulator-cronet;master.tryserver.chromium.mac:ios-simulator-full-configs
Change-Id: I26f97dba5a0bb07f83df184db59b8f610c220877
Reviewed-on: https://chromium-review.googlesource.com/888750Reviewed-by: Rohit Rao <rohitrao@chromium.org>
Commit-Queue: Eric Noyau <noyau@chromium.org>
Cr-Commit-Position: refs/heads/master@{#532389}

ios/chrome/browser/experimental_flags.h

@@ -48,9 +48,6 @@ bool IsMemoryDebuggingEnabled();
 // Whether the Clear Browsing Data counters and time selection UI is enabled.
 bool IsNewClearBrowsingDataUIEnabled();
 
-// Whether the page icon for downgraded HTTPS is enabled.
-bool IsPageIconForDowngradedHTTPSEnabled();
-
 // Whether startup crash is enabled.
 bool IsStartupCrashEnabled();
 

ios/chrome/browser/experimental_flags.mm

@@ -101,16 +101,6 @@ bool IsNewClearBrowsingDataUIEnabled() {
   return false;
 }
 
-// Emergency switch for https://crbug.com/527084 in case of unforeseen UX
-// regressions.
-// Defaults to Enabled unless the Finch trial has explicitly disabled it.
-bool IsPageIconForDowngradedHTTPSEnabled() {
-  std::string group_name =
-      base::FieldTrialList::FindFullName("IOSPageIconForDowngradedHTTPS");
-  return !base::StartsWith(group_name, "Disabled",
-                           base::CompareCase::INSENSITIVE_ASCII);
-}
-
 bool IsStartupCrashEnabled() {
   return [[NSUserDefaults standardUserDefaults] boolForKey:kEnableStartupCrash];
 }

ios/chrome/browser/ui/omnibox/location_bar_controller_impl.mm

@@ -230,7 +230,6 @@ void LocationBarControllerImpl::OnChanged() {
       bool show_icon_for_state = security_state::ShouldAlwaysShowIcon(
           toolbarModel->GetSecurityLevel(false));
       bool page_has_downgraded_HTTPS =
-          experimental_flags::IsPageIconForDowngradedHTTPSEnabled() &&
           DoesCurrentPageHaveCertInfo(GetWebState());
       if (show_icon_for_state || page_has_downgraded_HTTPS || page_is_offline) {
         [location_bar_view_ setLeadingButtonHidden:NO];