Remove SecurityStateModel memoization

chrome/browser/ssl/chrome_security_state_model_client.h

 // 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.
 
 #ifndef CHROME_BROWSER_SSL_CHROME_SECURITY_STATE_MODEL_CLIENT_H_
 #define CHROME_BROWSER_SSL_CHROME_SECURITY_STATE_MODEL_CLIENT_H_
 
 #include <memory>
 
 #include "base/macros.h"
 #include "components/security_state/security_state_model.h"
 #include "components/security_state/security_state_model_client.h"
 #include "content/public/browser/web_contents_user_data.h"
 #include "content/public/common/security_style.h"
 
 namespace content {
 struct SecurityStyleExplanations;
 class WebContents;
 }  // namespace content
 
 // Uses a WebContents to provide a SecurityStateModel with the
 // information that it needs to determine the page's security status.
 class ChromeSecurityStateModelClient
     : public security_state::SecurityStateModelClient,
       public content::WebContentsUserData<ChromeSecurityStateModelClient> {
  public:
   ~ChromeSecurityStateModelClient() override;
 
-  const security_state::SecurityStateModel::SecurityInfo& GetSecurityInfo()
-      const;
+  void GetSecurityInfo(
+      security_state::SecurityStateModel::SecurityInfo* result) const;
 
   // Returns the SecurityStyle that should be applied to a WebContents
   // with the given |security_info|. Populates
   // |security_style_explanations| to explain why the returned
   // SecurityStyle was chosen.
   static content::SecurityStyle GetSecurityStyle(
       const security_state::SecurityStateModel::SecurityInfo& security_info,
       content::SecurityStyleExplanations* security_style_explanations);
 
   // SecurityStateModelClient:
   void GetVisibleSecurityState(
       security_state::SecurityStateModel::VisibleSecurityState* state) override;
   bool RetrieveCert(scoped_refptr<net::X509Certificate>* cert) override;
   bool UsedPolicyInstalledCertificate() override;
   bool IsOriginSecure(const GURL& url) override;
 
  private:
   explicit ChromeSecurityStateModelClient(content::WebContents* web_contents);
   friend class content::WebContentsUserData<ChromeSecurityStateModelClient>;
 
   content::WebContents* web_contents_;
   std::unique_ptr<security_state::SecurityStateModel> security_state_model_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeSecurityStateModelClient);
 };
 
 #endif  // CHROME_BROWSER_SSL_CHROME_SECURITY_STATE_MODEL_CLIENT_H_