Register generic type of instantiated Map literal.

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

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 part of js_backend;
 
 class JavaScriptItemCompilationContext extends ItemCompilationContext {
   final Set<HInstruction> boundsChecked = new Set<HInstruction>();
   final Set<HInstruction> allocatedFixedLists = new Set<HInstruction>();
 }
@@ skipping 778 matching lines @@
         enqueue(enqueuer,
                 compiler.findHelper('iae'),
                 elements);
       } else if (cls == compiler.functionClass) {
         enqueueClass(enqueuer, compiler.closureClass, elements);
       } else if (cls == compiler.mapClass) {
         // The backend will use a literal list to initialize the entries
         // of the map.
         enqueueClass(enqueuer, compiler.listClass, elements);
         enqueueClass(enqueuer, mapLiteralClass, elements);
+        // For map literals, the dependency between the implementation class
+        // and [Map] is not visible, so we have to add it manually.
+        rti.registerRtiDependency(mapLiteralClass, cls);
         enqueueInResolution(getMapMaker(), elements);
       } else if (cls == compiler.boundClosureClass) {
         // TODO(ngeoffray): Move the bound closure class in the
         // backend.
         enqueueClass(enqueuer, compiler.boundClosureClass, elements);
       } else if (Elements.isNativeOrExtendsNative(cls)) {
         enqueue(enqueuer, getNativeInterceptorMethod, elements);
         enqueueClass(enqueuer, jsInterceptorClass, compiler.globalDependencies);
         enqueueClass(enqueuer, jsPlainJavaScriptObjectClass, elements);
       }
@@ skipping 1080 matching lines @@
     copy(constant.values);
     copy(constant.protoValue);
     copy(constant);
   }
 
   void visitConstructed(ConstructedConstant constant) {
     copy(constant.fields);
     copy(constant);
   }
 }