Move native and js interop properties from the element model to the JS backend

pkg/compiler/lib/src/common/codegen.dart

Index: pkg/compiler/lib/src/common/codegen.dart
diff --git a/pkg/compiler/lib/src/common/codegen.dart b/pkg/compiler/lib/src/common/codegen.dart
index ed52590bb5f39ced7d7c9a63d453136178324fb3..ab154f948c7eed583932542f56e274ef32ab4716 100644
--- a/pkg/compiler/lib/src/common/codegen.dart
+++ b/pkg/compiler/lib/src/common/codegen.dart
@@ -59,12 +59,6 @@ class CodegenRegistry extends Registry {
     assert(false);
   }
 
-  void registerInlining(Element inlinedElement, Element context) {
-    if (compiler.dumpInfo) {
-      compiler.dumpInfoTask.registerInlined(inlinedElement, context);
-    }
-  }
-
   void registerInstantiatedClass(ClassElement element) {
     backend.registerInstantiatedType(element.rawType, world, this);
   }