Implement SecurityHandler to send the lock icon status to DevTools.

content/browser/devtools/render_frame_devtools_agent_host.h

Index: content/browser/devtools/render_frame_devtools_agent_host.h
diff --git a/content/browser/devtools/render_frame_devtools_agent_host.h b/content/browser/devtools/render_frame_devtools_agent_host.h
index 15e6dcd36835341e0f6aaa096f5165713d4bbbe8..9335e692ad47ea65c7cc3249ed749ff76dfe58e8 100644
--- a/content/browser/devtools/render_frame_devtools_agent_host.h
+++ b/content/browser/devtools/render_frame_devtools_agent_host.h
@@ -37,6 +37,7 @@ namespace inspector { class InspectorHandler; }
 namespace network { class NetworkHandler; }
 namespace page { class PageHandler; }
 namespace power { class PowerHandler; }
+namespace security { class SecurityHandler; }
 namespace service_worker { class ServiceWorkerHandler; }
 namespace tracing { class TracingHandler; }
 }
@@ -131,6 +132,7 @@ class CONTENT_EXPORT RenderFrameDevToolsAgentHost
   scoped_ptr<devtools::network::NetworkHandler> network_handler_;
   scoped_ptr<devtools::page::PageHandler> page_handler_;
   scoped_ptr<devtools::power::PowerHandler> power_handler_;
+  scoped_ptr<devtools::security::SecurityHandler> security_handler_;
   scoped_ptr<devtools::service_worker::ServiceWorkerHandler>
       service_worker_handler_;
   scoped_ptr<devtools::tracing::TracingHandler> tracing_handler_;