<webview> Fix crash when closing chrome://chrome-signin

content/browser/web_contents/web_contents_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/browser/web_contents/web_contents_impl.h"
 
 #include <stddef.h>
 
 #include <cmath>
 #include <utility>
@@ skipping 2458 matching lines @@
       node->current_frame_host()->GetRenderWidgetHost()->SendScreenRects();
   }
 
   RenderWidgetHostViewBase* rwhv =
       static_cast<RenderWidgetHostViewBase*>(GetRenderWidgetHostView());
   if (rwhv) {
     SendPageMessage(new PageMsg_UpdateWindowScreenRect(
         MSG_ROUTING_NONE, rwhv->GetBoundsInRootWindow()));
   }
 
-  if (browser_plugin_embedder_)
+  if (browser_plugin_embedder_ && !is_being_destroyed_)
     browser_plugin_embedder_->DidSendScreenRects();
 }
 
 void WebContentsImpl::OnFirstPaintAfterLoad(
     RenderWidgetHostImpl* render_widget_host) {
   for (auto& observer : observers_)
     observer.DidFirstPaintAfterLoad(render_widget_host);
 }
 
 TextInputManager* WebContentsImpl::GetTextInputManager() {
@@ skipping 2787 matching lines @@
   dialog_manager_ = dialog_manager;
 }
 
 void WebContentsImpl::RemoveBindingSet(const std::string& interface_name) {
   auto it = binding_sets_.find(interface_name);
   if (it != binding_sets_.end())
     binding_sets_.erase(it);
 }
 
 }  // namespace content