Remove the WARNING security level.

chrome/browser/android/policy/policy_auditor.cc

 // Copyright 2016 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 "chrome/browser/android/policy/policy_auditor.h"
 
 #include "content/public/browser/navigation_entry.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/ssl_status.h"
 #include "content/public/browser/web_contents.h"
@@ skipping 22 matching lines @@
 
   content::WebContents* web_contents =
       content::WebContents::FromJavaWebContents(java_web_contents);
   content::NavigationEntry* entry =
       web_contents->GetController().GetVisibleEntry();
   if (!entry)
     return NONE;
 
   const content::SSLStatus& ssl = entry->GetSSL();
   switch (ssl.security_style) {
-    case content::SECURITY_STYLE_WARNING:
     case content::SECURITY_STYLE_UNKNOWN:
     case content::SECURITY_STYLE_UNAUTHENTICATED:
       return NONE;
 
     case content::SECURITY_STYLE_AUTHENTICATION_BROKEN:
     case content::SECURITY_STYLE_AUTHENTICATED: {
       if (net::IsCertStatusError(ssl.cert_status)) {
         if (ssl.cert_status & net::CERT_STATUS_AUTHORITY_INVALID)
           return CERTIFICATE_FAIL_UNTRUSTED;
         if (ssl.cert_status & net::CERT_STATUS_REVOKED)
@@ skipping 10 matching lines @@
         return CERTIFICATE_FAIL_UNSPECIFIED;
       }
     }
   }
   return NONE;
 }
 
 bool RegisterPolicyAuditor(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }