Extract InterceptorData from JavaScriptBackend.

pkg/compiler/lib/src/ssa/kernel_ast_adapter.dart

Index: pkg/compiler/lib/src/ssa/kernel_ast_adapter.dart
diff --git a/pkg/compiler/lib/src/ssa/kernel_ast_adapter.dart b/pkg/compiler/lib/src/ssa/kernel_ast_adapter.dart
index 42e9ed41cb08ecc74706dcc9e81fa9e94b6f1b85..bce7b6bce27ee154b50db1db6589001c9d4b00d2 100644
--- a/pkg/compiler/lib/src/ssa/kernel_ast_adapter.dart
+++ b/pkg/compiler/lib/src/ssa/kernel_ast_adapter.dart
@@ -316,11 +316,11 @@ class KernelAstAdapter extends KernelElementAdapterMixin {
 
   bool isIntercepted(ir.Node node) {
     Selector selector = getSelector(node);
-    return _backend.isInterceptedSelector(selector);
+    return _backend.interceptorData.isInterceptedSelector(selector);
   }
 
   bool isInterceptedSelector(Selector selector) {
-    return _backend.isInterceptedSelector(selector);
+    return _backend.interceptorData.isInterceptedSelector(selector);
   }
 
   // Is the member a lazy initialized static or top-level member?