[oilpan] Move CSSSegmentedFontFace to the managed heap

Source/core/css/CSSFontFace.cpp

 /*
  * Copyright (C) 2007, 2008, 2011 Apple 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 39 matching lines @@
 bool CSSFontFace::isValid() const
 {
     size_t size = m_sources.size();
     for (size_t i = 0; i < size; i++) {
         if (m_sources[i]->isValid())
             return true;
     }
     return false;
 }
 
-void CSSFontFace::addedToSegmentedFontFace(CSSSegmentedFontFace* segmentedFontFace)
+void CSSFontFace::addedToSegmentedFontFace(Handle<CSSSegmentedFontFace> segmentedFontFace)
 {
-    m_segmentedFontFaces.add(segmentedFontFace);
+    m_segmentedFontFaces.add(segmentedFontFace.raw());
 }
 
-void CSSFontFace::removedFromSegmentedFontFace(CSSSegmentedFontFace* segmentedFontFace)
+void CSSFontFace::removedFromSegmentedFontFace(Handle<CSSSegmentedFontFace> segmentedFontFace)
 {
-    m_segmentedFontFaces.remove(segmentedFontFace);
+    m_segmentedFontFaces.remove(segmentedFontFace.raw());
 }
 
 void CSSFontFace::addSource(PassOwnPtr<CSSFontFaceSource> source)
 {
     source->setFontFace(this);
     m_sources.append(source);
 }
 
 void CSSFontFace::fontLoaded(CSSFontFaceSource* source)
 {
     if (source != m_activeSource)
         return;
 
     // FIXME: Can we assert that m_segmentedFontFaces is not empty? That may
     // require stopping in-progress font loading when the last
     // CSSSegmentedFontFace is removed.
     if (m_segmentedFontFaces.isEmpty())
         return;
 
     // Use one of the CSSSegmentedFontFaces' font selector. They all have
     // the same font selector, so it's wasteful to store it in the CSSFontFace.
     CSSFontSelector* fontSelector = (*m_segmentedFontFaces.begin())->fontSelector();
+    if (!fontSelector)
+        return;
     fontSelector->fontLoaded();
 
     if (RuntimeEnabledFeatures::fontLoadEventsEnabled() && m_loadState == Loading) {
         if (source->ensureFontData())
             notifyFontLoader(Loaded);
         else if (!isValid())
             notifyFontLoader(Error);
     }
 
     HashSet<CSSSegmentedFontFace*>::iterator end = m_segmentedFontFaces.end();
     for (HashSet<CSSSegmentedFontFace*>::iterator it = m_segmentedFontFaces.begin(); it != end; ++it)
         (*it)->fontLoaded(this);
 }
 
 PassRefPtr<SimpleFontData> CSSFontFace::getFontData(const FontDescription& fontDescription, bool syntheticBold, bool syntheticItalic)
 {
     m_activeSource = 0;
     if (!isValid())
         return 0;
 
     ASSERT(!m_segmentedFontFaces.isEmpty());
     CSSFontSelector* fontSelector = (*m_segmentedFontFaces.begin())->fontSelector();
+    if (!fontSelector)
+        return 0;
 
     if (RuntimeEnabledFeatures::fontLoadEventsEnabled() && m_loadState == NotLoaded)
         notifyFontLoader(Loading);
 
     size_t size = m_sources.size();
     for (size_t i = 0; i < size; ++i) {
         if (RefPtr<SimpleFontData> result = m_sources[i]->getFontData(fontDescription, syntheticBold, syntheticItalic, fontSelector)) {
             m_activeSource = m_sources[i].get();
             if (RuntimeEnabledFeatures::fontLoadEventsEnabled() && m_loadState == Loading && m_sources[i]->isLoaded())
                 notifyFontLoader(Loaded);
             return result.release();
         }
     }
 
     if (RuntimeEnabledFeatures::fontLoadEventsEnabled() && m_loadState == Loading)
         notifyFontLoader(Error);
     return 0;
 }
 
 void CSSFontFace::notifyFontLoader(LoadState newState)
 {
     m_loadState = newState;
 
-    Document* document = (*m_segmentedFontFaces.begin())->fontSelector()->document();
+    CSSFontSelector* fontSelector = (*m_segmentedFontFaces.begin())->fontSelector();
+    if (!fontSelector)
+        return;
+    Document* document = fontSelector->document();
     if (!document)
         return;
 
     switch (newState) {
     case Loading:
         document->fontloader()->beginFontLoading(m_rule);
         break;
     case Loaded:
         document->fontloader()->fontLoaded(m_rule);
         break;
@@ skipping 11 matching lines @@
     size_t size = m_sources.size();
     for (size_t i = 0; i < size; i++) {
         if (m_sources[i]->isSVGFontFaceSource())
             return true;
     }
     return false;
 }
 #endif
 
 }