Index: content/browser/renderer_host/render_widget_host_impl.cc |
=================================================================== |
--- content/browser/renderer_host/render_widget_host_impl.cc (revision 183209) |
+++ content/browser/renderer_host/render_widget_host_impl.cc (working copy) |
@@ -1214,6 +1214,9 @@ |
void RenderWidgetHostImpl::RemoveKeyboardListener( |
KeyboardListener* listener) { |
+ // Ensure that the element is actually in the list. |
+ DCHECK(std::find(keyboard_listeners_.begin(), keyboard_listeners_.end(), |
+ listener) != keyboard_listeners_.end()); |
keyboard_listeners_.remove(listener); |
} |