Remove obsolete SHA-1 UX elements

chrome/browser/ssl/security_state_tab_helper.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 "chrome/browser/ssl/security_state_tab_helper.h"
 
 #include "base/bind.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/time/time.h"
 #include "build/build_config.h"
@@ skipping 183 matching lines @@
 }
 
 std::unique_ptr<security_state::VisibleSecurityState>
 SecurityStateTabHelper::GetVisibleSecurityState() const {
   auto state = security_state::GetVisibleSecurityState(web_contents());
 
   // Malware status might already be known even if connection security
   // information is still being initialized, thus no need to check for that.
   state->malicious_content_status = GetMaliciousContentStatus();
 
-  // If the chain contains SHA1, populate the display policy field.
-  // In M56, we want to display a Neutral security state if the SHA1
-  // certificate was not blocked because the kCertEnableSha1LocalAnchors
-  // policy has been set.
-  // TODO(elawrence): remove this in M57, https://crbug.com/676826
-  if (state->cert_status & net::CERT_STATUS_SHA1_SIGNATURE_PRESENT) {
-    state->display_sha1_from_local_anchors_as_neutral =
-        g_browser_process->local_state()->GetBoolean(
-            ssl_config::prefs::kCertEnableSha1LocalAnchors);
-  }
-
   return state;
 }