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 218 matching lines @@
   virtual void selectFindResult(bool forward, int identifier) {}
   // 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) {}
-
+  // Check whether a plugin can be interacted with.A positive return value

[Bernhard Bauer, 2017/04/03 10:14:20]

Nit: Space after period.

[George Joseph, 2017/04/04 23:37:41]

Done.

+  // means the plugin has not loaded and hence cannot be interacted with.
+  // The plugin could ,however, load successfully later.

[Bernhard Bauer, 2017/04/03 10:14:20]

Nit: swap comma and space (the first instance plz 😉)

[George Joseph, 2017/04/04 23:37:41]

Done.

   virtual bool isPlaceholder() { return true; }
+  // Check whether a plugin failed to load, with there being  no possibility of

[Bernhard Bauer, 2017/04/03 10:14:20]

Nit: collapse two spaces between "being" and "no" into one.

[George Joseph, 2017/04/04 23:37:41]

Done.

+  // it loading later.
+  virtual bool isErrorplaceholder() { return false; }

[Bernhard Bauer, 2017/04/03 10:14:20]

Nit: isErrorPlaceholder (the CamelCase version of "is error placeholder"), and
in the WebViewPlugin::Delegate method IsErrorPlaceholder.

[George Joseph, 2017/04/04 23:37:41]

Done.

 
  protected:
   ~WebPlugin() {}
 };
 
 }  // namespace blink
 
 #endif