Signal no pending activity in destructed contexts.

third_party/WebKit/Source/core/css/FontFace.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 634 matching lines @@
   visitor->trace(m_cssFontFace);
   visitor->trace(m_callbacks);
   SuspendableObject::trace(visitor);
 }
 
 bool FontFace::hadBlankText() const {
   return m_cssFontFace->hadBlankText();
 }
 
 bool FontFace::hasPendingActivity() const {
-  return m_status == Loading && getExecutionContext() &&
-         !getExecutionContext()->isContextDestroyed();
+  return m_status == Loading && getExecutionContext();
 }
 
 }  // namespace blink