Add type arguments to constants.

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

Index: sdk/lib/_internal/compiler/implementation/js_backend/emitter.dart
diff --git a/sdk/lib/_internal/compiler/implementation/js_backend/emitter.dart b/sdk/lib/_internal/compiler/implementation/js_backend/emitter.dart
index 7721152828ca122906778004e701eeb526b89d91..3ad87ad46e82debdea4d091ffc01c43716c07810 100644
--- a/sdk/lib/_internal/compiler/implementation/js_backend/emitter.dart
+++ b/sdk/lib/_internal/compiler/implementation/js_backend/emitter.dart
@@ -3174,13 +3174,16 @@ if (typeof document !== "undefined" && document.readyState !== "complete") {
       emitStaticFunctionGetters(mainBuffer);
 
       emitRuntimeTypeSupport(mainBuffer);
+      emitGetInterceptorMethods(mainBuffer);
+      // Constants in checked mode call into RTI code to set type information
+      // which may need getInterceptor methods, so we have to make sure that
+      // [emitGetInterceptorMethods] has been called.
       emitCompileTimeConstants(mainBuffer);
       // Static field initializations require the classes and compile-time
       // constants to be set up.
       emitStaticNonFinalFieldInitializations(mainBuffer);
       emitOneShotInterceptors(mainBuffer);
       emitInterceptedNames(mainBuffer);
-      emitGetInterceptorMethods(mainBuffer);
       emitLazilyInitializedStaticFields(mainBuffer);
 
       mainBuffer.add(nativeBuffer);