Move BrowserPluginDelegate's lifetime mgmt out of content/

content/public/renderer/browser_plugin_delegate.h

 // Copyright 2014 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 CONTENT_PUBLIC_RENDERER_BROWSER_PLUGIN_DELEGATE_H_
 #define CONTENT_PUBLIC_RENDERER_BROWSER_PLUGIN_DELEGATE_H_
 
 #include <string>
 
 #include "content/common/content_export.h"
@@ skipping 29 matching lines @@
   // Called when plugin document receives data.
   virtual void DidReceiveData(const char* data, int data_length) {}
 
   // Sets the instance ID that idenfies the plugin within current render
   // process.
   virtual void SetElementInstanceID(int element_instance_id) {}
 
   // Called when the plugin resizes.
   virtual void DidResizeElement(const gfx::Size& new_size) {}
 
+  // Called when the plugin is about to be destroyed.
+  virtual void WillDestroy() {}
+
   // Return a scriptable object for the plugin.
   virtual v8::Local<v8::Object> V8ScriptableObject(v8::Isolate* isolate);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_RENDERER_BROWSER_PLUGIN_DELEGATE_H_