Emit error events if the loading of an object element failed

components/plugins/renderer/webview_plugin.cc

Index: components/plugins/renderer/webview_plugin.cc
diff --git a/components/plugins/renderer/webview_plugin.cc b/components/plugins/renderer/webview_plugin.cc
index bb9eecff628892a020511304c3f55d31cca64c38..79cf4453e5edadbb9f651db70d13a0a37e171e61 100644
--- a/components/plugins/renderer/webview_plugin.cc
+++ b/components/plugins/renderer/webview_plugin.cc
@@ -148,6 +148,12 @@ void WebViewPlugin::UpdateAllLifecyclePhases() {
   web_view()->UpdateAllLifecyclePhases();
 }
 
+bool WebViewPlugin::IsErrorPlaceholder() {
+  if (!delegate_)
+    return false;
+  return delegate_->IsErrorPlaceholder();
+}
+
 void WebViewPlugin::Paint(WebCanvas* canvas, const WebRect& rect) {
   gfx::Rect paint_rect = gfx::IntersectRects(rect_, rect);
   if (paint_rect.IsEmpty())