Revert "First rev of Safe DOM"

tools/dom/templates/html/impl/impl_SVGElement.darttemplate

Index: tools/dom/templates/html/impl/impl_SVGElement.darttemplate
diff --git a/tools/dom/templates/html/impl/impl_SVGElement.darttemplate b/tools/dom/templates/html/impl/impl_SVGElement.darttemplate
index 576854b83edfc1a55fec97ac398676ca4961742a..9e87d5b7e98f6254b790b9249ee2504ca977223c 100644
--- a/tools/dom/templates/html/impl/impl_SVGElement.darttemplate
+++ b/tools/dom/templates/html/impl/impl_SVGElement.darttemplate
@@ -31,28 +31,10 @@ class _AttributeClassSet extends CssClassSetImpl {
 }
 
 $(ANNOTATIONS)$(CLASS_MODIFIERS)class $CLASSNAME$EXTENDS$IMPLEMENTS$NATIVESPEC {
-  static final _START_TAG_REGEXP = new RegExp('<(\\w+)');
-
   factory $CLASSNAME.tag(String tag) =>
-      document.$dom_createElementNS("http://www.w3.org/2000/svg", tag);
-  factory $CLASSNAME.svg(String svg,
-      {NodeValidator validator, NodeTreeSanitizer treeSanitizer}) {
-
-    if (validator == null && treeSanitizer == null) {
-      validator = new NodeValidatorBuilder.common()..allowSvg();
-    }
-
-    final match = _START_TAG_REGEXP.firstMatch(svg);
-    var parentElement;
-    if (match != null && match.group(1).toLowerCase() == 'svg') {
-      parentElement = document.body;
-    } else {
-      parentElement = new SvgSvgElement();
-    }
-    var fragment = parentElement.createFragment(svg, validator: validator,
-        treeSanitizer: treeSanitizer);
-    return fragment.nodes.where((e) => e is SvgElement).single;
-  }
+      _$(CLASSNAME)FactoryProvider.create$(CLASSNAME)_tag(tag);
+  factory $CLASSNAME.svg(String svg) =>
+      _$(CLASSNAME)FactoryProvider.create$(CLASSNAME)_svg(svg);
 
   _AttributeClassSet _cssClassSet;
   CssClassSet get classes {
@@ -84,33 +66,12 @@ $(ANNOTATIONS)$(CLASS_MODIFIERS)class $CLASSNAME$EXTENDS$IMPLEMENTS$NATIVESPEC {
     return container.innerHtml;
   }
 
-  void set innerHtml(String value) {
-    this.setInnerHtml(value);
-  }
-
-  DocumentFragment createFragment(String svg,
-      {NodeValidator validator, NodeTreeSanitizer treeSanitizer}) {
-
-    if (treeSanitizer == null) {
-      if (validator == null) {
-        validator = new NodeValidatorBuilder.common()
-          ..allowSvg();
-      }
-      treeSanitizer = new NodeTreeSanitizer(validator);
-    }
-
-    // We create a fragment which will parse in the HTML parser
-    var html = '<svg version="1.1">$svg</svg>';
-    var fragment = document.body.createFragment(html,
-        treeSanitizer: treeSanitizer);
-
-    var svgFragment = new DocumentFragment();
-    // The root is the <svg/> element, need to pull out the contents.
-    var root = fragment.nodes.single;
-    while (root.firstChild != null) {
-      svgFragment.append(root.firstChild);
-    }
-    return svgFragment;
+  void set innerHtml(String svg) {
+    final container = new Element.tag("div");
+    // Wrap the SVG string in <svg> so that SvgElements are created, rather than
+    // HTMLElements.
+    container.innerHtml = '<svg version="1.1">$svg</svg>';
+    this.children = container.children[0].children;
   }
 
   // Unsupported methods inherited from Element.