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

client/dom/generated/src/frog/Float32Array.dart

Index: client/dom/generated/src/frog/Float32Array.dart
diff --git a/client/dom/generated/src/frog/Float32Array.dart b/client/dom/generated/src/frog/Float32Array.dart
index 2976eb47ba012a576046452fcc153f5d00aa9e35..829bed6edf0f398c9041890926ec757ded641730 100644
--- a/client/dom/generated/src/frog/Float32Array.dart
+++ b/client/dom/generated/src/frog/Float32Array.dart
@@ -1,5 +1,5 @@
 
-class Float32ArrayJs extends ArrayBufferViewJs implements Float32Array, List<num> native "*Float32Array" {
+class _Float32ArrayJs extends _ArrayBufferViewJs implements Float32Array, List<num> native "*Float32Array" {
 
   factory Float32Array(int length) =>  _construct_Float32Array(length);
 
@@ -86,5 +86,5 @@ class Float32ArrayJs extends ArrayBufferViewJs implements Float32Array, List<num
 
   void setElements(Object array, [int offset = null]) native;
 
-  Float32ArrayJs subarray(int start, [int end = null]) native;
+  _Float32ArrayJs subarray(int start, [int end = null]) native;
 }