Remove SVG fonts

Source/core/svg/SVGAltGlyphDefElement.cpp

Index: Source/core/svg/SVGAltGlyphDefElement.cpp
diff --git a/Source/core/svg/SVGAltGlyphDefElement.cpp b/Source/core/svg/SVGAltGlyphDefElement.cpp
deleted file mode 100644
index ecef1c8a6e9dc249341c0a5258276954aa7bd20c..0000000000000000000000000000000000000000
--- a/Source/core/svg/SVGAltGlyphDefElement.cpp
+++ /dev/null
@@ -1,118 +0,0 @@
-/*
- * Copyright (C) 2011 Leo Yang <leoyang@webkit.org>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public License
- * along with this library; see the file COPYING.LIB.  If not, write to
- * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
- * Boston, MA 02110-1301, USA.
- */
-
-#include "config.h"
-
-#if ENABLE(SVG_FONTS)
-#include "core/svg/SVGAltGlyphDefElement.h"
-
-#include "core/SVGNames.h"
-#include "core/dom/ElementTraversal.h"
-#include "core/svg/SVGAltGlyphItemElement.h"
-#include "core/svg/SVGGlyphRefElement.h"
-
-namespace blink {
-
-inline SVGAltGlyphDefElement::SVGAltGlyphDefElement(Document& document)
-    : SVGElement(SVGNames::altGlyphDefTag, document)
-{
-}
-
-DEFINE_NODE_FACTORY(SVGAltGlyphDefElement)
-
-bool SVGAltGlyphDefElement::hasValidGlyphElements(Vector<AtomicString>& glyphNames) const
-{
-    // Spec: http://www.w3.org/TR/SVG/text.html#AltGlyphDefElement
-    // An 'altGlyphDef' can contain either of the following:
-    //
-    // 1. In the simplest case, an 'altGlyphDef' contains one or more 'glyphRef' elements.
-    // Each 'glyphRef' element references a single glyph within a particular font.
-    // If all of the referenced glyphs are available, then these glyphs are rendered
-    // instead of the character(s) inside of the referencing 'altGlyph' element.
-    // If any of the referenced glyphs are unavailable, then the character(s) that are
-    // inside of the 'altGlyph' element are rendered as if there were not an 'altGlyph'
-    // element surrounding those characters.
-    //
-    // 2. In the more complex case, an 'altGlyphDef' contains one or more 'altGlyphItem' elements.
-    // Each 'altGlyphItem' represents a candidate set of substitute glyphs. Each 'altGlyphItem'
-    // contains one or more 'glyphRef' elements. Each 'glyphRef' element references a single
-    // glyph within a particular font. The first 'altGlyphItem' in which all referenced glyphs
-    // are available is chosen. The glyphs referenced from this 'altGlyphItem' are rendered
-    // instead of the character(s) that are inside of the referencing 'altGlyph' element.
-    // If none of the 'altGlyphItem' elements result in a successful match (i.e., none of the
-    // 'altGlyphItem' elements has all of its referenced glyphs available), then the character(s)
-    // that are inside of the 'altGlyph' element are rendered as if there were not an 'altGlyph'
-    // element surrounding those characters.
-    //
-    // The spec doesn't tell how to deal with the mixing of <glyphRef> and <altGlyItem>.
-    // However, we determine content model by the the type of the first appearing element
-    // just like Opera 11 does. After the content model is determined we skip elements
-    // which don't comform to it. For example:
-    // a.    <altGlyphDef>
-    //         <glyphRef id="g1" />
-    //         <altGlyphItem id="i1"> ... </altGlyphItem>
-    //         <glyphRef id="g2" />
-    //       </altGlyphDef>
-    //
-    // b.    <altGlyphDef>
-    //         <altGlyphItem id="i1"> ... </altGlyphItem>
-    //         <altGlyphItem id="i2"> ... </altGlyphItem>
-    //         <glyphRef id="g1" />
-    //         <glyphRef id="g2" />
-    //       </altGlyphDef>
-    // For a), the content model is 1), so we will use "g1" and "g2" if they are all valid
-    // and "i1" is skipped.
-    // For b), the content model is 2), so we will use <glyphRef> elements contained in
-    // "i1" if they are valid and "g1" and "g2" are skipped.
-
-    // These 2 variables are used to determine content model.
-    bool fountFirstGlyphRef = false;
-    bool foundFirstAltGlyphItem = false;
-
-    for (SVGElement* child = Traversal<SVGElement>::firstChild(*this); child; child = Traversal<SVGElement>::nextSibling(*child)) {
-        if (!foundFirstAltGlyphItem && isSVGGlyphRefElement(*child)) {
-            fountFirstGlyphRef = true;
-            AtomicString referredGlyphName;
-
-            if (toSVGGlyphRefElement(child)->hasValidGlyphElement(referredGlyphName))
-                glyphNames.append(referredGlyphName);
-            else {
-                // As the spec says "If any of the referenced glyphs are unavailable,
-                // then the character(s) that are inside of the 'altGlyph' element are
-                // rendered as if there were not an 'altGlyph' element surrounding
-                // those characters.".
-                glyphNames.clear();
-                return false;
-            }
-        } else if (!fountFirstGlyphRef && isSVGAltGlyphItemElement(*child)) {
-            foundFirstAltGlyphItem = true;
-            Vector<AtomicString> referredGlyphNames;
-
-            // As the spec says "The first 'altGlyphItem' in which all referenced glyphs
-            // are available is chosen."
-            if (toSVGAltGlyphItemElement(child)->hasValidGlyphElements(glyphNames) && !glyphNames.isEmpty())
-                return true;
-        }
-    }
-    return !glyphNames.isEmpty();
-}
-
-}
-
-#endif