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_dispatcher.h"
+#include "content/public/browser/web_contents.h"
+#include "content/public/browser/web_contents_observer.h"
+#include "content/public/common/security_style.h"
+
+namespace content {
+namespace devtools {
+namespace security {
+
+class SecurityHandler : private WebContentsObserver {

[pfeldman, 2015/06/09 18:36:44]

Please rebaseline it on top of the stub.

[lgarron, 2015/06/09 18:54:45]

The latest patch is already rebased onto the #include
"content/public/common/security_style.h" change. Anything else?

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