Emit error events if the loading of an object element failed

third_party/WebKit/public/web/WebPlugin.h

 /*
  * Copyright (C) 2009, 2012 Google Inc. All rights reserved.
  * Copyright (C) 2014 Opera Software ASA. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 219 matching lines @@
   // Tells the plugin that the user has stopped the find operation.
   virtual void stopFind() {}
 
   // View rotation types.
   enum RotationType { RotationType90Clockwise, RotationType90Counterclockwise };
   // Whether the plugin can rotate the view of its content.
   virtual bool canRotateView() { return false; }
   // Rotates the plugin's view of its content.
   virtual void rotateView(RotationType type) {}
 
-  virtual bool isPlaceholder() { return true; }
+  virtual bool isPlaceholder() { return placeholder; }
+  virtual void markAsErrorPlaceholder() { placeholder = true; }
+  virtual void unmarkAsErrorPlaceholder() { placeholder = false; }
 
  protected:
   ~WebPlugin() {}
+  bool placeholder = false;

[Bernhard Bauer, 2017/03/27 09:20:27]

WebPlugin is an interface; it shouldn't have members (and only trivial method
implementations). This should be on WebViewPlugin.

[George Joseph, 2017/03/28 10:08:31]

Done.

 };
 
 }  // namespace blink
 
 #endif