Emit error events if the loading of an object element failed

third_party/WebKit/Source/core/html/HTMLPlugInElement.cpp

Index: third_party/WebKit/Source/core/html/HTMLPlugInElement.cpp
diff --git a/third_party/WebKit/Source/core/html/HTMLPlugInElement.cpp b/third_party/WebKit/Source/core/html/HTMLPlugInElement.cpp
index ed05618b07ae7bac1f96455b39d745f2e253b58f..116bc5e2e9f6f5050b35acea356e75393ebc522c 100644
--- a/third_party/WebKit/Source/core/html/HTMLPlugInElement.cpp
+++ b/third_party/WebKit/Source/core/html/HTMLPlugInElement.cpp
@@ -424,6 +424,13 @@ bool HTMLPlugInElement::isPluginElement() const {
   return true;
 }
 
+bool HTMLPlugInElement::isPlaceholder() {
+  if (pluginWidget() && (pluginWidget()->isPluginContainer()) &&
+      ((pluginWidget()->isPlaceholder())))
+    return true;
+  return false;
+}
+
 void HTMLPlugInElement::disconnectContentFrame() {
   HTMLFrameOwnerElement::disconnectContentFrame();
   setPersistedPluginWidget(nullptr);