Make dart:dom implementation types private so they don't muddle the docs.

client/dom/generated/src/frog/SVGStyleElement.dart

 
-class SVGStyleElementJs extends SVGElementJs implements SVGStyleElement native "*SVGStyleElement" {
+class _SVGStyleElementJs extends _SVGElementJs implements SVGStyleElement native "*SVGStyleElement" {
 
   String get media() native "return this.media;";
 
   void set media(String value) native "this.media = value;";
 
   String get title() native "return this.title;";
 
   void set title(String value) native "this.title = value;";
 
   String get type() native "return this.type;";
 
   void set type(String value) native "this.type = value;";
 
   // From SVGLangSpace
 
   String get xmllang() native "return this.xmllang;";
 
   void set xmllang(String value) native "this.xmllang = value;";
 
   String get xmlspace() native "return this.xmlspace;";
 
   void set xmlspace(String value) native "this.xmlspace = value;";
 }