😴 Skip some KeepAlive registrations on shutdown.

extensions/browser/api/guest_view/web_view/web_view_internal_api.cc

 // 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.
 
 #include "extensions/browser/api/guest_view/web_view/web_view_internal_api.h"
 
 #include <utility>
 
 #include "base/memory/ptr_util.h"
 #include "base/strings/string_number_conversions.h"
@@ skipping 242 matching lines @@
   EXTENSION_FUNCTION_VALIDATE(args_->GetInteger(0, &instance_id));
   WebViewGuest* guest = WebViewGuest::From(
       render_frame_host()->GetProcess()->GetID(), instance_id);
   if (!guest)
     return false;
 
   return RunAsyncSafe(guest);
 }
 
 bool WebViewInternalExtensionFunction::PreRunValidation(std::string* error) {
+  if (!UIThreadExtensionFunction::PreRunValidation(error))
+    return false;
+
   int instance_id = 0;
   EXTENSION_FUNCTION_PRERUN_VALIDATE(args_->GetInteger(0, &instance_id));
   guest_ = WebViewGuest::From(render_frame_host()->GetProcess()->GetID(),
                               instance_id);
   if (!guest_) {
     *error = "Could not find guest";
     return false;
   }
   return true;
 }
@@ skipping 689 matching lines @@
   // Will finish asynchronously.
   return true;
 }
 
 void WebViewInternalClearDataFunction::ClearDataDone() {
   Release();  // Balanced in RunAsync().
   SendResponse(true);
 }
 
 }  // namespace extensions