Introduce browser-side plumbing for sending the lock icon status to DevTools.

chrome/browser/ui/browser.cc

Index: chrome/browser/ui/browser.cc
diff --git a/chrome/browser/ui/browser.cc b/chrome/browser/ui/browser.cc
index 6ccb52cab2b020b29baaca9c8b71cbd22edf7350..8c86fdf3e1973e4503d33ea2db31238446bbae52 100644
--- a/chrome/browser/ui/browser.cc
+++ b/chrome/browser/ui/browser.cc
@@ -1301,6 +1301,11 @@ bool Browser::CanDragEnter(content::WebContents* source,
   return true;
 }
 
+content::SecurityStyle Browser::GetSecurityStyle(
+    const WebContents* web_contents) {
+  return ConnectionSecurityHelper::GetSecurityStyleForWebContents(web_contents);
+}
+
 bool Browser::IsMouseLocked() const {
   return exclusive_access_manager_->mouse_lock_controller()->IsMouseLocked();
 }