Only re-export the main methods. The ddc codegen doesn't depend on any other methods being exported…

pkg/dev_compiler/lib/js/amd/dart_sdk.js

Index: pkg/dev_compiler/lib/js/amd/dart_sdk.js
diff --git a/pkg/dev_compiler/lib/js/amd/dart_sdk.js b/pkg/dev_compiler/lib/js/amd/dart_sdk.js
index 8d7c71e73ea5babc7056c8be13519ce4f65ff2a6..19c7a777a833e3309bcbc1b7c0df3790aa12c49e 100644
--- a/pkg/dev_compiler/lib/js/amd/dart_sdk.js
+++ b/pkg/dev_compiler/lib/js/amd/dart_sdk.js
@@ -83133,15 +83133,6 @@ define([], function() {
       sanitizeNode: dart.definiteFunctionType(dart.void, [html$.Node, html$.Node])
     })
   });
-  html$.Point$ = math.Point$;
-  html$.Point = math.Point;
-  html$.Rectangle$ = math.Rectangle$;
-  html$.Rectangle = math.Rectangle;
-  html_common.SupportedBrowser = _metadata.SupportedBrowser;
-  html_common.Unstable = _metadata.Unstable;
-  html_common.DocsEditable = _metadata.DocsEditable;
-  html_common.Experimental = _metadata.Experimental;
-  html_common.DomName = _metadata.DomName;
   html_common.convertDartToNative_SerializedScriptValue = function(value) {
     return html_common.convertDartToNative_PrepareForStructuredClone(value);
   };