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

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

 // Copyright (c) 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 "ios/chrome/browser/ui/omnibox/omnibox_view_ios.h"
 
 #import <CoreText/CoreText.h>
 #import <MobileCoreServices/MobileCoreServices.h>
 
 #include "base/command_line.h"
@@ skipping 638 matching lines @@
                range:NSMakeRange(0, [as length])];
 
     [as addAttribute:NSForegroundColorAttributeName
                value:[field_ displayedTextColor]
                range:ComponentToNSRange(host)];
 
     if (scheme.len > 0) {
       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
           if (![field_ incognito])
             color = WarningTextColor();
           [as addAttribute:NSStrikethroughStyleAttributeName
                      value:[NSNumber numberWithInteger:NSUnderlineStyleSingle]
                      range:ComponentToNSRange(scheme)];
           break;
         case security_state::SECURE:
         case security_state::EV_SECURE:
           color = [field_ incognito] ? IncognitoSecureTextColor()
                                      : SecureTextColor();
           break;
         case security_state::DANGEROUS:
           // Don't color strikethrough schemes. See https://crbug.com/635004#c6
           if (![field_ incognito])
             color = ErrorTextColor();
           [as addAttribute:NSStrikethroughStyleAttributeName
                      value:[NSNumber numberWithInteger:NSUnderlineStyleSingle]
                      range:ComponentToNSRange(scheme)];
           break;
-        case security_state::HTTP_SHOW_WARNING:
         case security_state::SECURE_WITH_POLICY_INSTALLED_CERT:
           NOTREACHED();
       }
       if (color) {
         [as addAttribute:NSForegroundColorAttributeName
                    value:color
                    range:ComponentToNSRange(scheme)];
       }
     }
   }
@@ skipping 174 matching lines @@
 // is being left out for now because it was not present before the OmniboxView
 // rewrite.
 #if 0
   // When editing is in progress, the url text is not colored, so there is
   // nothing to emphasize.  (Calling SetText() in that situation would also be
   // harmful, as it would reset the carat position to the end of the text.)
   if (!IsEditingOrEmpty())
     SetText(GetText());
 #endif
 }