Implement SecurityHandler to send the lock icon status to DevTools.

content/browser/devtools/render_frame_devtools_agent_host.cc

Index: content/browser/devtools/render_frame_devtools_agent_host.cc
diff --git a/content/browser/devtools/render_frame_devtools_agent_host.cc b/content/browser/devtools/render_frame_devtools_agent_host.cc
index c3e2ec9c556dab330b1a0c9ef6ed2ed4f95dd76e..c8eb13391e7d539ea038c6c29962b152f38d3a37 100644
--- a/content/browser/devtools/render_frame_devtools_agent_host.cc
+++ b/content/browser/devtools/render_frame_devtools_agent_host.cc
@@ -17,6 +17,7 @@
 #include "content/browser/devtools/protocol/network_handler.h"
 #include "content/browser/devtools/protocol/page_handler.h"
 #include "content/browser/devtools/protocol/power_handler.h"
+#include "content/browser/devtools/protocol/security_handler.h"
 #include "content/browser/devtools/protocol/service_worker_handler.h"
 #include "content/browser/devtools/protocol/tracing_handler.h"
 #include "content/browser/frame_host/render_frame_host_impl.h"
@@ -295,6 +296,7 @@ RenderFrameDevToolsAgentHost::RenderFrameDevToolsAgentHost(
       network_handler_(new devtools::network::NetworkHandler()),
       page_handler_(nullptr),
       power_handler_(new devtools::power::PowerHandler()),
+      security_handler_(new devtools::security::SecurityHandler()),
       service_worker_handler_(
           new devtools::service_worker::ServiceWorkerHandler()),
       tracing_handler_(new devtools::tracing::TracingHandler(
@@ -311,6 +313,7 @@ RenderFrameDevToolsAgentHost::RenderFrameDevToolsAgentHost(
   dispatcher->SetInspectorHandler(inspector_handler_.get());
   dispatcher->SetNetworkHandler(network_handler_.get());
   dispatcher->SetPowerHandler(power_handler_.get());
+  dispatcher->SetSecurityHandler(security_handler_.get());
   dispatcher->SetServiceWorkerHandler(service_worker_handler_.get());
   dispatcher->SetTracingHandler(tracing_handler_.get());
 
@@ -604,6 +607,8 @@ void RenderFrameDevToolsAgentHost::UpdateProtocolHandlers(
   if (page_handler_)
     page_handler_->SetRenderFrameHost(host);
   service_worker_handler_->SetRenderFrameHost(host);
+  if (security_handler_)
+    security_handler_->SetRenderFrameHost(host);
 }
 
 void RenderFrameDevToolsAgentHost::DisconnectWebContents() {