Update the Bling omnibox to be aware of HTTP_SHOW_WARNING and use ShouldAlwaysShowIcon().

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

Index: ios/chrome/browser/ui/omnibox/omnibox_view_ios.mm
diff --git a/ios/chrome/browser/ui/omnibox/omnibox_view_ios.mm b/ios/chrome/browser/ui/omnibox/omnibox_view_ios.mm
index 47bf4aebde093f33a43e9ae01a3fd16b7527d748..31e498d8240a2cce529dc33574e15174768db959 100644
--- a/ios/chrome/browser/ui/omnibox/omnibox_view_ios.mm
+++ b/ios/chrome/browser/ui/omnibox/omnibox_view_ios.mm
@@ -656,6 +656,7 @@ NSAttributedString* OmniboxViewIOS::ApplyTextAttributes(
       UIColor* color = nil;
       switch (controller_->GetToolbarModel()->GetSecurityLevel(false)) {
         case security_state::NONE:
+        case security_state::HTTP_SHOW_WARNING:
           break;
         case security_state::SECURITY_WARNING:
           // Don't color strikethrough schemes. See https://crbug.com/635004#c6
@@ -678,7 +679,6 @@ NSAttributedString* OmniboxViewIOS::ApplyTextAttributes(
                      value:[NSNumber numberWithInteger:NSUnderlineStyleSingle]
                      range:ComponentToNSRange(scheme)];
           break;
-        case security_state::HTTP_SHOW_WARNING:
         case security_state::SECURE_WITH_POLICY_INSTALLED_CERT:
           NOTREACHED();
       }