Terminate plugins as well as runing onunload handlers during slow shutdown.

content/renderer/render_view_impl.cc

 // Copyright (c) 2012 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 "content/renderer/render_view_impl.h"
 
 #include <algorithm>
 #include <cmath>
 #include <string>
 #include <vector>
@@ skipping 4452 matching lines @@
 
   WebPageSerializer::serialize(webview()->mainFrame(), true, this, weburl_links,
                                webstring_paths,
                                webkit_glue::FilePathToWebString(
                                    local_directory_name));
 }
 
 void RenderViewImpl::OnShouldClose() {
   base::TimeTicks before_unload_start_time = base::TimeTicks::Now();
   bool should_close = webview()->dispatchBeforeUnloadEvent();
+  if (should_close)
+    pepper_delegate_.OnDestruct();
   base::TimeTicks before_unload_end_time = base::TimeTicks::Now();
   Send(new ViewHostMsg_ShouldClose_ACK(routing_id_, should_close,
                                        before_unload_start_time,
                                        before_unload_end_time));
 }
 
 void RenderViewImpl::OnSwapOut(const ViewMsg_SwapOut_Params& params) {
   // Ensure that no other in-progress navigation continues.
   OnStop();
 
@@ skipping 823 matching lines @@
 bool RenderViewImpl::WebWidgetHandlesCompositorScheduling() const {
   return !!RenderThreadImpl::current()->compositor_thread();
 }
 
 void RenderViewImpl::OnJavaBridgeInit() {
   DCHECK(!java_bridge_dispatcher_.get());
 #if defined(ENABLE_JAVA_BRIDGE)
   java_bridge_dispatcher_.reset(new JavaBridgeDispatcher(this));
 #endif
 }