CSS Font Loading: drop readonly to use Setlike functionalities

third_party/WebKit/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 239 matching lines @@
     m_loadingFonts.remove(fontFace);
     if (m_loadingFonts.isEmpty())
         handlePendingEventsAndPromisesSoon();
 }
 
 ScriptPromise FontFaceSet::ready(ScriptState* scriptState)
 {
     return m_ready->promise(scriptState->world());
 }
 
-void FontFaceSet::add(FontFace* fontFace, ExceptionState& exceptionState)
+PassRefPtrWillBeRawPtr<FontFaceSet> FontFaceSet::addForBinding(ScriptState*, FontFace* fontFace, ExceptionState& exceptionState)
 {
     if (!inActiveDocumentContext())
-        return;
+        return this;
     if (!fontFace) {
         exceptionState.throwTypeError("The argument is not a FontFace.");
-        return;
+        return this;
     }
     if (m_nonCSSConnectedFaces.contains(fontFace))
-        return;
+        return this;
     if (isCSSConnectedFontFace(fontFace)) {
         exceptionState.throwDOMException(InvalidModificationError, "Cannot add a CSS-connected FontFace.");
-        return;
+        return this;
     }
     CSSFontSelector* fontSelector = document()->styleEngine().fontSelector();
     m_nonCSSConnectedFaces.add(fontFace);
     fontSelector->fontFaceCache()->addFontFace(fontSelector, fontFace, false);
     if (fontFace->loadStatus() == FontFace::Loading)
         addToLoadingFonts(fontFace);
     fontSelector->fontFaceInvalidated();
+    return this;
 }
 
-void FontFaceSet::clear()
+void FontFaceSet::clearForBinding(ScriptState*, ExceptionState&)
 {
     if (!inActiveDocumentContext() || m_nonCSSConnectedFaces.isEmpty())
         return;
     CSSFontSelector* fontSelector = document()->styleEngine().fontSelector();
     FontFaceCache* fontFaceCache = fontSelector->fontFaceCache();
     for (const auto& fontFace : m_nonCSSConnectedFaces) {
         fontFaceCache->removeFontFace(fontFace.get(), false);
         if (fontFace->loadStatus() == FontFace::Loading)
             removeFromLoadingFonts(fontFace);
     }
     m_nonCSSConnectedFaces.clear();
     fontSelector->fontFaceInvalidated();
 }
 
-bool FontFaceSet::remove(FontFace* fontFace, ExceptionState& exceptionState)
+bool FontFaceSet::deleteForBinding(ScriptState*, FontFace* fontFace, ExceptionState& exceptionState)
 {
     if (!inActiveDocumentContext())
         return false;
     if (!fontFace) {
         exceptionState.throwTypeError("The argument is not a FontFace.");
         return false;
     }
     WillBeHeapListHashSet<RefPtrWillBeMember<FontFace>>::iterator it = m_nonCSSConnectedFaces.find(fontFace);
     if (it != m_nonCSSConnectedFaces.end()) {
         m_nonCSSConnectedFaces.remove(it);
@@ skipping 244 matching lines @@
     visitor->trace(m_loadedFonts);
     visitor->trace(m_failedFonts);
     visitor->trace(m_nonCSSConnectedFaces);
     HeapSupplement<Document>::trace(visitor);
 #endif
     EventTargetWithInlineData::trace(visitor);
     ActiveDOMObject::trace(visitor);
 }
 
 } // namespace blink