Remove the WARNING security level.

content/browser/devtools/protocol/security_handler.cc

 // Copyright 2015 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 "content/browser/devtools/protocol/security_handler.h"
 
 #include <string>
 
 #include "content/browser/devtools/protocol/devtools_protocol_dispatcher.h"
 #include "content/public/browser/navigation_controller.h"
@@ skipping 13 matching lines @@
 
 std::string SecurityStyleToProtocolSecurityState(
     SecurityStyle security_style) {
   switch (security_style) {
     case SECURITY_STYLE_UNKNOWN:
       return kSecurityStateUnknown;
     case SECURITY_STYLE_UNAUTHENTICATED:
       return kSecurityStateNeutral;
     case SECURITY_STYLE_AUTHENTICATION_BROKEN:
       return kSecurityStateInsecure;
-    case SECURITY_STYLE_WARNING:
-      return kSecurityStateWarning;
     case SECURITY_STYLE_AUTHENTICATED:
       return kSecurityStateSecure;
     default:
       NOTREACHED();
       return kSecurityStateUnknown;
   }
 }
 
 void AddExplanations(
     const std::string& security_style,
@@ skipping 111 matching lines @@
   scoped_refptr<net::X509Certificate> certificate = web_contents->
       GetController().GetLastCommittedEntry()->GetSSL().certificate;
   web_contents->GetDelegate()->ShowCertificateViewerInDevTools(
       web_contents, certificate);
   return Response::OK();
 }
 
 }  // namespace security
 }  // namespace devtools
 }  // namespace content