GTK: Mixed content scheme should be gray.

chrome/browser/autocomplete/autocomplete_edit_view_gtk.cc

Index: chrome/browser/autocomplete/autocomplete_edit_view_gtk.cc
diff --git a/chrome/browser/autocomplete/autocomplete_edit_view_gtk.cc b/chrome/browser/autocomplete/autocomplete_edit_view_gtk.cc
index 21f964f3df4ca7f173dece598f5a37e4a1a2826d..06f6ef7cd96562a7cefb0d470da141f9ddb870dc 100644
--- a/chrome/browser/autocomplete/autocomplete_edit_view_gtk.cc
+++ b/chrome/browser/autocomplete/autocomplete_edit_view_gtk.cc
@@ -1439,6 +1439,8 @@ void AutocompleteEditViewGtk::EmphasizeURLComponents() {
 
       gtk_text_buffer_apply_tag(text_buffer_, security_error_scheme_tag_,
                                 &start, &end);
+    } else if (security_level_ == ToolbarModel::SECURITY_WARNING) {
+      gtk_text_buffer_apply_tag(text_buffer_, faded_text_tag_, &start, &end);
     } else {
       gtk_text_buffer_apply_tag(text_buffer_, secure_scheme_tag_, &start, &end);
     }