Lesser direct Compiler use in SSA

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 12f1482481a2f364a52c235432eec30dcdfd2cd8..79379d252102d99eed9889d34777773f41b38e04 100644
--- a/pkg/compiler/lib/src/ssa/graph_builder.dart
+++ b/pkg/compiler/lib/src/ssa/graph_builder.dart
@@ -7,6 +7,7 @@ import '../constants/constant_system.dart';
 import '../common/codegen.dart' show CodegenRegistry;
 import '../common_elements.dart';
 import '../compiler.dart';
+import '../deferred_load.dart';
 import '../diagnostics/diagnostic_listener.dart';
 import '../elements/elements.dart';
 import '../elements/entities.dart' show Entity, Local;
@@ -39,7 +40,7 @@ abstract class GraphBuilder {
 
   // TODO(het): remove this
   /// A reference to the compiler.
-  Compiler compiler;
+  Compiler get compiler;
 
   /// True if the builder is processing nodes inside a try statement. This is
   /// important for generating control flow out of a try block like returns or
@@ -95,6 +96,10 @@ abstract class GraphBuilder {
 
   JsInteropAnalysis get jsInteropAnalysis => backend.jsInteropAnalysis;
 
+  DeferredLoadTask get deferredLoadTask => compiler.deferredLoadTask;
+
+  Types get types => compiler.types;
+
   /// Used to track the locals while building the graph.
   LocalsHandler localsHandler;