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

chrome/browser/ssl/connection_security_helper.cc

Index: chrome/browser/ssl/connection_security_helper.cc
diff --git a/chrome/browser/ssl/connection_security_helper.cc b/chrome/browser/ssl/connection_security_helper.cc
index 63455835bb614efb709850c2695e0c1a78d84b03..e55d1aca569cb60120471822d4cb328916b0c809 100644
--- a/chrome/browser/ssl/connection_security_helper.cc
+++ b/chrome/browser/ssl/connection_security_helper.cc
@@ -128,3 +128,24 @@ ConnectionSecurityHelper::GetSecurityLevelForWebContents(
       return NONE;
   }
 }
+
+content::SecurityStyle ConnectionSecurityHelper::GetSecurityStyleForWebContents(
+    const content::WebContents* web_contents) {
+  SecurityLevel security_level = GetSecurityLevelForWebContents(web_contents);
+
+  switch (security_level) {
+    case NONE:
+      return content::SECURITY_STYLE_UNAUTHENTICATED;
+    case EV_SECURE:
+    case SECURE:
+      return content::SECURITY_STYLE_AUTHENTICATED;
+    case SECURITY_WARNING:
+    case SECURITY_POLICY_WARNING:
+      return content::SECURITY_STYLE_WARNING;
+    case SECURITY_ERROR:
+      return content::SECURITY_STYLE_AUTHENTICATION_BROKEN;
+  }
+
+  NOTREACHED();
+  return content::SECURITY_STYLE_UNKNOWN;
+}