Remove Compiler and JavaScriptBackend from interceptor_stub_generator.

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 5b523d9723fdc2245bb9a1a48cb7ecc44f4ad767..9c4535584708c876928ebe89450ef2646cf9d8a2 100644
--- a/pkg/compiler/lib/src/js_backend/backend.dart
+++ b/pkg/compiler/lib/src/js_backend/backend.dart
@@ -4,8 +4,6 @@
 
 library js_backend.backend;
 
-import 'package:js_runtime/shared/embedded_names.dart' as embeddedNames;
-
 import '../common.dart';
 import '../common/backend_api.dart'
     show BackendClasses, ForeignResolver, NativeRegistry, ImpactTransformer;
@@ -1154,24 +1152,6 @@ class JavaScriptBackend {
     }
   }
 
-  jsAst.Call generateIsJsIndexableCall(
-      jsAst.Expression use1, jsAst.Expression use2) {
-    String dispatchPropertyName = embeddedNames.DISPATCH_PROPERTY_NAME;
-    jsAst.Expression dispatchProperty =
-        emitter.generateEmbeddedGlobalAccess(dispatchPropertyName);
-
-    // We pass the dispatch property record to the isJsIndexable
-    // helper rather than reading it inside the helper to increase the
-    // chance of making the dispatch record access monomorphic.
-    jsAst.PropertyAccess record =
-        new jsAst.PropertyAccess(use2, dispatchProperty);
-
-    List<jsAst.Expression> arguments = <jsAst.Expression>[use1, record];
-    MethodElement helper = commonElements.isJsIndexable;
-    jsAst.Expression helperExpression = emitter.staticFunctionAccess(helper);
-    return new jsAst.Call(helperExpression, arguments);
-  }
-
   /// Called after the queue is closed. [onQueueEmpty] may be called multiple
   /// times, but [onQueueClosed] is only called once.
   void onQueueClosed() {