Add @JSName annotation for native fields and methods.

sdk/lib/_internal/compiler/implementation/compiler.dart

Index: sdk/lib/_internal/compiler/implementation/compiler.dart
diff --git a/sdk/lib/_internal/compiler/implementation/compiler.dart b/sdk/lib/_internal/compiler/implementation/compiler.dart
index e770cff2319056437c6eff12c693a9ed17a56240..996d52f5ed54622fc7bb0589e764cc020310dd87 100644
--- a/sdk/lib/_internal/compiler/implementation/compiler.dart
+++ b/sdk/lib/_internal/compiler/implementation/compiler.dart
@@ -493,8 +493,11 @@ abstract class Compiler implements DiagnosticListener {
         || libraryName == 'dart:math'
         || libraryName == 'dart:html'
         || libraryName == 'dart:svg') {
-      if (libraryName == 'dart:html' || libraryName == 'dart:mirrors') {
-        // dart:html needs access to convertDartClosureToJS.
+      if (libraryName == 'dart:html' ||
+          libraryName == 'dart:svg' ||
+          libraryName == 'dart:mirrors') {
+        // dart:html and dart:svg need access to convertDartClosureToJS and
+        // annotation classes.
         // dart:mirrors needs access to the Primitives class.
         importHelperLibrary(library);
       }