Compute KernelClosureRepresentationInfo.variableIsUsedInTryOrSync

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 014949331f8556a2aa39ab6f20ad7c24b54901fd..c044ce99717746bbafb8335da9ca20c78a3fcfad 100644
--- a/pkg/compiler/lib/src/ssa/kernel_ast_adapter.dart
+++ b/pkg/compiler/lib/src/ssa/kernel_ast_adapter.dart
@@ -123,7 +123,8 @@ class KernelAstAdapter extends KernelToElementMapMixin
       // Closures require a lookup one level deeper in the closure class mapper.
       if (target == null) {
         MethodElement originTargetFunction = originTarget;
-        ClosureRepresentationInfo classMap = _compiler.closureDataLookup
+        ClosureRepresentationInfo classMap = _compiler
+            .backendStrategy.closureDataLookup
             .getClosureRepresentationInfo(originTargetFunction);
         if (classMap.closureEntity != null) {
           target = kernel.localFunctions[classMap.closureEntity];