Add security handler stub for sending 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"

[estark, 2015/06/09 20:39:20]

nit: you can forward-declare this and do the #include in the .cc file

Not a big deal though because this will go away in the follow-up patch.

[lgarron, 2015/06/09 20:48:27]

Will keep in mind for the future. Since it'll be removed in the follow-up, I'll
leave it here for now and avoid another rebase.

+
+namespace content {
+namespace devtools {
+namespace security {
+
+class SecurityHandler {
+ public:
+  typedef DevToolsProtocolClient::Response Response;
+
+  SecurityHandler();
+  virtual ~SecurityHandler();
+
+  void SetClient(scoped_ptr<DevToolsProtocolClient> client);
+
+  Response Enable();
+  Response Disable();
+
+ private:
+
+  DISALLOW_COPY_AND_ASSIGN(SecurityHandler);
+};
+
+}  // namespace security
+}  // namespace devtools
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_DEVTOOLS_PROTOCOL_SECURITY_HANDLER_H_