Emit error events if the loading of an object element failed

components/plugins/renderer/loadable_plugin_placeholder.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef COMPONENTS_PLUGINS_RENDERER_LOADABLE_PLUGIN_PLACEHOLDER_H_
 #define COMPONENTS_PLUGINS_RENDERER_LOADABLE_PLUGIN_PLACEHOLDER_H_
 
 #include <memory>
 
 #include "base/macros.h"
@@ skipping 73 matching lines @@
 
   // True if the power saver heuristic has already been run on this content.
   bool heuristic_run_before_;
 
  private:
   // WebViewPlugin::Delegate methods:
   void PluginDestroyed() override;
   v8::Local<v8::Object> GetV8ScriptableObject(
       v8::Isolate* isolate) const override;
   void OnUnobscuredRectUpdate(const gfx::Rect& unobscured_rect) override;
+  bool IsErrorPlaceholder() override;
 
   // RenderFrameObserver methods:
   void WasShown() override;
 
   void UpdateMessage();
 
   bool LoadingBlocked() const;
 
   // Plugin creation is embedder-specific.
   virtual blink::WebPlugin* CreatePlugin() = 0;
@@ skipping 35 matching lines @@
   gfx::Rect unobscured_rect_;
 
   base::WeakPtrFactory<LoadablePluginPlaceholder> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(LoadablePluginPlaceholder);
 };
 
 }  // namespace plugins
 
 #endif  // COMPONENTS_PLUGINS_RENDERER_LOADABLE_PLUGIN_PLACEHOLDER_H_