Move the plugin placeholder from CppBoundClass to gin::Wrappable

components/plugins/renderer/webview_plugin.cc

 // Copyright 2013 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.
 
 #include "components/plugins/renderer/webview_plugin.h"
 
 #include "base/message_loop/message_loop.h"
 #include "base/metrics/histogram.h"
 #include "base/safe_numerics.h"
 #include "content/public/renderer/web_preferences.h"
@@ skipping 89 matching lines @@
 WebPluginContainer* WebViewPlugin::container() const { return container_; }
 
 bool WebViewPlugin::initialize(WebPluginContainer* container) {
   container_ = container;
   if (container_)
     old_title_ = container_->element().getAttribute("title");
   return true;
 }
 
 void WebViewPlugin::destroy() {
-  if (delegate_) {
-    delegate_->WillDestroyPlugin();
+  if (delegate_)
     delegate_ = NULL;
-  }
   container_ = NULL;
   base::MessageLoop::current()->DeleteSoon(FROM_HERE, this);
 }
 
 NPObject* WebViewPlugin::scriptableObject() { return NULL; }
 
 struct _NPP* WebViewPlugin::pluginNPP() { return NULL; }
 
 bool WebViewPlugin::getFormValue(WebString& value) { return false; }
 
@@ skipping 98 matching lines @@
 void WebViewPlugin::didClearWindowObject(WebFrame* frame) {
   if (delegate_)
     delegate_->BindWebFrame(frame);
 }
 
 void WebViewPlugin::didReceiveResponse(WebFrame* frame,
                                        unsigned identifier,
                                        const WebURLResponse& response) {
   WebFrameClient::didReceiveResponse(frame, identifier, response);
 }