Making almost all dom_ methods private. Exceptions will be addressed in a later CL.

sdk/lib/svg/dart2js/svg_dart2js.dart

Index: sdk/lib/svg/dart2js/svg_dart2js.dart
diff --git a/sdk/lib/svg/dart2js/svg_dart2js.dart b/sdk/lib/svg/dart2js/svg_dart2js.dart
index f5066ee1ee5277d330d638238397421631f48259..cf6b778bae5f05523180979cc3e33562fd6383d3 100644
--- a/sdk/lib/svg/dart2js/svg_dart2js.dart
+++ b/sdk/lib/svg/dart2js/svg_dart2js.dart
@@ -4817,8 +4817,8 @@ class SvgElement extends Element native "SVGElement" {
     throw new UnsupportedError("Cannot invoke insertAdjacentElement on SVG.");
   }
 
-  HtmlCollection get $dom_children {
-    throw new UnsupportedError("Cannot get dom_children on SVG.");
+  HtmlCollection get _children {
+    throw new UnsupportedError("Cannot get _children on SVG.");
   }
 
   bool get isContentEditable => false;
@@ -4839,7 +4839,7 @@ class SvgElement extends Element native "SVGElement" {
   factory SvgElement._() { throw new UnsupportedError("Not supported"); }
 
   // Shadowing definition.
-  AnimatedString get $dom_svgClassName => JS("AnimatedString", "#.className", this);
+  AnimatedString get _svgClassName => JS("AnimatedString", "#.className", this);
 
   @JSName('ownerSVGElement')
   @DomName('SVGElement.ownerSVGElement')