Move hasRuntimeTypeSupport, hasIsolateSupport, and hasFunctionApplySupport to JavaScriptBackend.

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

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 import 'dart:collection';
 
 import 'package:js_runtime/shared/embedded_names.dart';
 
 import '../closure.dart';
 import '../common.dart';
@@ skipping 2689 matching lines @@
     }
     push(new HStringConcat(inputs[0], inputs[1], backend.stringType));
   }
 
   void handleForeignJsCurrentIsolateContext(ast.Send node) {
     if (!node.arguments.isEmpty) {
       reporter.internalError(
           node, 'Too many arguments to JS_CURRENT_ISOLATE_CONTEXT.');
     }
 
-    if (!compiler.hasIsolateSupport) {
+    if (!backend.hasIsolateSupport) {
       // If the isolate library is not used, we just generate code
       // to fetch the static state.
       String name = backend.namer.staticStateHolder;
       push(new HForeignCode(
           js.js.parseForeignJS(name), backend.dynamicType, <HInstruction>[],
           nativeBehavior: native.NativeBehavior.DEPENDS_OTHER));
     } else {
       // Call a helper method from the isolate library. The isolate
       // library uses its own isolate structure, that encapsulates
       // Leg's isolate.
@@ skipping 175 matching lines @@
         }
       }
     }
     reporter.reportErrorMessage(
         node, MessageKind.WRONG_ARGUMENT_FOR_JS_INTERCEPTOR_CONSTANT);
     stack.add(graph.addConstantNull(compiler));
   }
 
   void handleForeignJsCallInIsolate(ast.Send node) {
     Link<ast.Node> link = node.arguments;
-    if (!compiler.hasIsolateSupport) {
+    if (!backend.hasIsolateSupport) {
       // If the isolate library is not used, we just invoke the
       // closure.
       visit(link.tail.head);
       push(new HInvokeClosure(new Selector.callClosure(0),
           <HInstruction>[pop()], backend.dynamicType));
     } else {
       // Call a helper method from the isolate library.
       Element element = helpers.callInIsolate;
       if (element == null) {
         reporter.internalError(node, 'Isolate library and compiler mismatch.');
@@ skipping 3834 matching lines @@
       this.oldReturnLocal,
       this.oldReturnType,
       this.oldResolvedAst,
       this.oldStack,
       this.oldLocalsHandler,
       this.inTryStatement,
       this.allFunctionsCalledOnce,
       this.oldElementInferenceResults)
       : super(function);
 }