Even less reliance on Compiler.closedWorld

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

Index: pkg/compiler/lib/src/ssa/graph_builder.dart
diff --git a/pkg/compiler/lib/src/ssa/graph_builder.dart b/pkg/compiler/lib/src/ssa/graph_builder.dart
index c35e34fb48e50bcfcb3f7a0d7477c8ea879ae4bf..ed7683a6847d7affb03f56a2baed9648e1c9080c 100644
--- a/pkg/compiler/lib/src/ssa/graph_builder.dart
+++ b/pkg/compiler/lib/src/ssa/graph_builder.dart
@@ -46,6 +46,9 @@ abstract class GraphBuilder {
 
   CommonMasks get commonMasks => closedWorld.commonMasks;
 
+  GlobalTypeInferenceResults get globalInferenceResults =>
+      compiler.globalInference.results;
+
   /// Used to track the locals while building the graph.
   LocalsHandler localsHandler;
 
@@ -198,8 +201,7 @@ abstract class GraphBuilder {
   }
 
   HInstruction buildFunctionType(FunctionType type) {
-    type.accept(
-        new ReifiedTypeRepresentationBuilder(compiler.closedWorld), this);
+    type.accept(new ReifiedTypeRepresentationBuilder(closedWorld), this);
     return pop();
   }