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 acbe2d537a7697ade62daf4111ad04a2c5831b58..0a2a35a464485064187b4cc5835718417bc5a62e 100644
--- a/third_party/WebKit/Source/core/html/HTMLPlugInElement.cpp
+++ b/third_party/WebKit/Source/core/html/HTMLPlugInElement.cpp
@@ -428,6 +428,13 @@ bool HTMLPlugInElement::isPluginElement() const {
   return true;
 }
 
+bool HTMLPlugInElement::isErrorplaceholder() {
+  if (pluginWidget() && (pluginWidget()->isPluginContainer()) &&

[Bernhard Bauer, 2017/04/05 09:56:20]

Nit: Parentheses around the individual expressions aren't necessary
(`pluginWidget() && pluginWidget()->isPluginContainer() &&
pluginWidget()->isErrorplaceholder()` works).

[George Joseph, 2017/04/09 00:41:37]

Done.

+      ((pluginWidget()->isErrorplaceholder())))
+    return true;
+  return false;
+}
+
 void HTMLPlugInElement::disconnectContentFrame() {
   HTMLFrameOwnerElement::disconnectContentFrame();
   setPersistedPluginWidget(nullptr);