Implement SecurityHandler to send the lock icon status to DevTools.

content/browser/devtools/protocol/security_handler.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 CONTENT_BROWSER_DEVTOOLS_PROTOCOL_SECURITY_HANDLER_H_
 #define CONTENT_BROWSER_DEVTOOLS_PROTOCOL_SECURITY_HANDLER_H_
 
 #include "content/browser/devtools/devtools_protocol_handler.h"
-#include "content/browser/devtools/protocol/devtools_protocol_client.h"
+#include "content/browser/devtools/protocol/devtools_protocol_dispatcher.h"
+#include "content/public/browser/web_contents_observer.h"
+#include "content/public/common/security_style.h"
 
 namespace content {
 namespace devtools {
 namespace security {
 
-class SecurityHandler {
+class SecurityHandler : private WebContentsObserver {

[pfeldman, 2015/06/11 06:45:50]

When using inheritance, make it public:

http://google-styleguide.googlecode.com/svn/trunk/cppguide.html#Inheritance

[lgarron, 2015/06/11 22:00:53]

Done.

  public:
   typedef DevToolsProtocolClient::Response Response;
 
   SecurityHandler();
-  virtual ~SecurityHandler();
+  ~SecurityHandler() override;
 
-  void SetClient(scoped_ptr<DevToolsProtocolClient> client);
+  void SetClient(scoped_ptr<Client> client);
+  void SetRenderFrameHost(RenderFrameHost* host);
+  void SecurityStyleChanged(SecurityStyle security_style) override;

[pfeldman, 2015/06/11 06:45:50]

Blank line, then // WebContentsObserver overrides, then this line. Also you can
move it into private section.

[lgarron, 2015/06/11 22:00:53]

Done.

 
   Response Enable();
   Response Disable();
 
  private:
+  std::string SecurityStyleToProtocolSecurityState(
+      content::SecurityStyle security_style);
+
+  scoped_ptr<Client> client_;
+  bool enabled_;
+  RenderFrameHost* host_;
 
   DISALLOW_COPY_AND_ASSIGN(SecurityHandler);
 };
 
 }  // namespace security
 }  // namespace devtools
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_DEVTOOLS_PROTOCOL_SECURITY_HANDLER_H_