dart2js: Use the NoInline annotation on getInterceptor in the JS runtime.

pkg/compiler/lib/src/js_backend/backend.dart

Index: pkg/compiler/lib/src/js_backend/backend.dart
diff --git a/pkg/compiler/lib/src/js_backend/backend.dart b/pkg/compiler/lib/src/js_backend/backend.dart
index 841e6d89d576e838ddaafa253f329979c6fdcf1f..f8d4e3a26365c60cc0ff899d119fff338cdb5752 100644
--- a/pkg/compiler/lib/src/js_backend/backend.dart
+++ b/pkg/compiler/lib/src/js_backend/backend.dart
@@ -2819,6 +2819,8 @@ class Annotations {
   ClassElement expectTrustTypeAnnotationsClass;
   ClassElement expectAssumeDynamicClass;
 
+  JavaScriptBackend get backend => compiler.backend;
+
   Annotations(this.compiler);
 
   void onLibraryScanned(LibraryElement library) {
@@ -2839,8 +2841,11 @@ class Annotations {
 
   /// Returns `true` if inlining is disabled for [element].
   bool noInline(Element element) {
-    // TODO(floitsch): restrict to test directory.
-    return _hasAnnotation(element, expectNoInlineClass);
+    if (_hasAnnotation(element, expectNoInlineClass)) {
+      // TODO(floitsch): restrict to elements from the test directory.
+      return true;
+    }
+    return _hasAnnotation(element, backend.noInlineClass);
   }
 
   /// Returns `true` if parameter and returns types should be trusted for