Add CSSFontSelector::removeFontFaceRule()

Source/core/css/CSSSegmentedFontFace.cpp

 /*
  * Copyright (C) 2008 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 75 matching lines @@
     }
 }
 
 void CSSSegmentedFontFace::appendFontFace(PassRefPtr<CSSFontFace> fontFace)
 {
     pruneTable();
     fontFace->setSegmentedFontFace(this);
     m_fontFaces.append(fontFace);
 }
 
+void CSSSegmentedFontFace::removeFontFace(PassRefPtr<CSSFontFace> fontFace)
+{
+    size_t index = m_fontFaces.find(fontFace);
+    if (index != kNotFound) {
+        pruneTable();
+        m_fontFaces.remove(index);
+        fontFace->clearSegmentedFontFace();
+    }
+}
+
 static void appendFontData(SegmentedFontData* newFontData, PassRefPtr<SimpleFontData> prpFaceFontData, const CSSFontFace::UnicodeRangeSet& ranges)
 {
     RefPtr<SimpleFontData> faceFontData = prpFaceFontData;
     unsigned numRanges = ranges.size();
     if (!numRanges) {
         newFontData->appendRange(FontDataRange(0, 0x7FFFFFFF, faceFontData));
         return;
     }
 
     for (unsigned j = 0; j < numRanges; ++j)
@@ skipping 104 matching lines @@
     unsigned size = m_fontFaces.size();
     for (unsigned i = 0; i < size; i++) {
         RefPtr<FontFace> face = m_fontFaces[i]->fontFace();
         if (face && m_fontFaces[i]->ranges().intersectsWith(text))
             fontFaces.append(face);
     }
     return fontFaces;
 }
 
 }