Make ConnectionSecurityHelper a namespace instead of a class

chrome/browser/ssl/connection_security_helper.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_CONNECTION_SECURITY_HELPER_H_
-#define CHROME_BROWSER_SSL_CONNECTION_SECURITY_HELPER_H_
-
-#include "base/macros.h"
-#include "content/public/common/security_style.h"
-
-namespace content {
-class WebContents;
-}  // namespace content
-
-// This class is responsible for computing the security level of a page.
-class ConnectionSecurityHelper {
- public:
-  // TODO(wtc): unify this enum with SecurityStyle.  We
-  // don't need two sets of security UI levels.  SECURITY_STYLE_AUTHENTICATED
-  // needs to be refined into three levels: warning, standard, and EV.
-  // See crbug.com/425728
-  //
-  // If you reorder, add, or delete values from this enum, you must also
-  // update the UI icons in ToolbarModelImpl::GetIconForSecurityLevel.
-  //
-  // A Java counterpart will be generated for this enum.
-  // GENERATED_JAVA_ENUM_PACKAGE: org.chromium.chrome.browser.ssl
-  // GENERATED_JAVA_CLASS_NAME_OVERRIDE: ConnectionSecurityHelperSecurityLevel
-  enum SecurityLevel {
-    // HTTP/no URL
-    NONE,
-
-    // HTTPS with valid EV cert
-    EV_SECURE,
-
-    // HTTPS (non-EV)
-    SECURE,
-
-    // HTTPS, but unable to check certificate revocation status or with insecure
-    // content on the page
-    SECURITY_WARNING,
-
-    // HTTPS, but the certificate verification chain is anchored on a
-    // certificate that was installed by the system administrator
-    SECURITY_POLICY_WARNING,
-
-    // Attempted HTTPS and failed, page not authenticated
-    SECURITY_ERROR,
-  };
-
-  // Returns a security level describing the overall security state of
-  // the given |WebContents|.
-  static SecurityLevel GetSecurityLevelForWebContents(
-      const content::WebContents* web_contents);
-
-  // Returns the content::SecurityStyle for the given |web_contents|.
-  // Note: This is a lossy operation. Not all of the policies
-  // that can be expressed by a SecurityLevel (a //chrome concept) can
-  // be expressed by a content::SecurityStyle.
-  // In general, code in //chrome should prefer to use
-  // GetSecurityLevelForWebContents() to determine security policy, and
-  // only use this function when policy needs to be supplied back to
-  // layers in //content.
-  static content::SecurityStyle GetSecurityStyleForWebContents(
-      const content::WebContents* web_contents);
-
- private:
-  DISALLOW_IMPLICIT_CONSTRUCTORS(ConnectionSecurityHelper);
-};
-
-#endif  // CHROME_BROWSER_SSL_CONNECTION_SECURITY_HELPER_H_