Remove ActiveDOMObject::{,un}setPendingActivity

Source/core/css/FontFaceSet.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:
  *
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 168 matching lines @@
 
 AtomicString FontFaceSet::status() const
 {
     DEFINE_STATIC_LOCAL(AtomicString, loading, ("loading", AtomicString::ConstructFromLiteral));
     DEFINE_STATIC_LOCAL(AtomicString, loaded, ("loaded", AtomicString::ConstructFromLiteral));
     return (!m_loadingFonts.isEmpty() || hasLoadedFonts()) ? loading : loaded;
 }
 
 void FontFaceSet::handlePendingEventsAndPromisesSoon()
 {
-    // setPendingActivity() is unnecessary because m_asyncRunner will be
-    // automatically stopped on destruction.
+    // m_asyncRunner will be automatically stopped on destruction.
     m_asyncRunner.runAsync();
 }
 
 void FontFaceSet::didLayout()
 {
     if (document()->frame()->isMainFrame() && m_loadingFonts.isEmpty())
         m_histogram.record();
     if (!RuntimeEnabledFeatures::fontLoadEventsEnabled())
         return;
     if (!m_loadingFonts.isEmpty() || (!hasLoadedFonts() && m_readyResolvers.isEmpty()))
@@ skipping 397 matching lines @@
     visitor->trace(m_loadingFonts);
     visitor->trace(m_loadedFonts);
     visitor->trace(m_failedFonts);
     visitor->trace(m_nonCSSConnectedFaces);
     DocumentSupplement::trace(visitor);
     EventTargetWithInlineData::trace(visitor);
 }
 #endif
 
 } // namespace WebCore