Compute NativeBehavior for native methods and fields.

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

Index: pkg/compiler/lib/src/ssa/kernel_impact.dart
diff --git a/pkg/compiler/lib/src/ssa/kernel_impact.dart b/pkg/compiler/lib/src/ssa/kernel_impact.dart
index 6439008f6b5d3a5a68d72ffbd82de0d638d3c425..c035c2d14c66d041e20b8d1484cd660c9351af4a 100644
--- a/pkg/compiler/lib/src/ssa/kernel_impact.dart
+++ b/pkg/compiler/lib/src/ssa/kernel_impact.dart
@@ -113,6 +113,12 @@ class KernelImpactBuilder extends ir.Visitor {
     } else {
       impactBuilder.registerFeature(Feature.FIELD_WITHOUT_INITIALIZER);
     }
+    if (field.isInstanceMember && astAdapter.isNative(field.enclosingClass)) {
+      impactBuilder
+          .registerNativeData(astAdapter.getNativeBehaviorForFieldLoad(field));
+      impactBuilder
+          .registerNativeData(astAdapter.getNativeBehaviorForFieldStore(field));
+    }
     return impactBuilder;
   }
 
@@ -142,6 +148,11 @@ class KernelImpactBuilder extends ir.Visitor {
         compiler.reporter.internalError(resolvedAst.element,
             "Unexpected async marker: ${procedure.function.asyncMarker}");
     }
+    if (procedure.isExternal &&
+        !astAdapter.isForeignLibrary(procedure.enclosingLibrary)) {
+      impactBuilder
+          .registerNativeData(astAdapter.getNativeBehaviorForMethod(procedure));
+    }
     return impactBuilder;
   }