Remove the WARNING security level.

chrome/browser/ssl/chrome_security_state_model_client.cc

Index: chrome/browser/ssl/chrome_security_state_model_client.cc
diff --git a/chrome/browser/ssl/chrome_security_state_model_client.cc b/chrome/browser/ssl/chrome_security_state_model_client.cc
index 1fe022041d1d764b4596f6270ba8fd620b6cb33d..604d45ab6bf498e8329e7b22e7f8428c27989cf8 100644
--- a/chrome/browser/ssl/chrome_security_state_model_client.cc
+++ b/chrome/browser/ssl/chrome_security_state_model_client.cc
@@ -55,10 +55,6 @@ SecurityStateModel::SecurityLevel GetSecurityLevelForSecurityStyle(
       return SecurityStateModel::NONE;
     case content::SECURITY_STYLE_AUTHENTICATION_BROKEN:
       return SecurityStateModel::SECURITY_ERROR;
-    case content::SECURITY_STYLE_WARNING:
-      // content currently doesn't use this style.
-      NOTREACHED();
-      return SecurityStateModel::SECURITY_WARNING;
     case content::SECURITY_STYLE_AUTHENTICATED:
       return SecurityStateModel::SECURE;
   }
@@ -72,10 +68,8 @@ content::SecurityStyle SecurityLevelToSecurityStyle(
     SecurityStateModel::SecurityLevel security_level) {
   switch (security_level) {
     case SecurityStateModel::NONE:
-      return content::SECURITY_STYLE_UNAUTHENTICATED;
-    case SecurityStateModel::SECURITY_WARNING:
     case SecurityStateModel::SECURITY_POLICY_WARNING:
-      return content::SECURITY_STYLE_WARNING;
+      return content::SECURITY_STYLE_UNAUTHENTICATED;
     case SecurityStateModel::EV_SECURE:
     case SecurityStateModel::SECURE:
       return content::SECURITY_STYLE_AUTHENTICATED;