Eagerly compute closure classes

pkg/compiler/lib/src/inferrer/simple_types_inferrer.dart

Index: pkg/compiler/lib/src/inferrer/simple_types_inferrer.dart
diff --git a/pkg/compiler/lib/src/inferrer/simple_types_inferrer.dart b/pkg/compiler/lib/src/inferrer/simple_types_inferrer.dart
index 85e5dbd8d967f7f688eb86d1c9b7136e7471d7ce..f56483d6ec0b1687ad8d0bc80afe4c9a6e0a986f 100644
--- a/pkg/compiler/lib/src/inferrer/simple_types_inferrer.dart
+++ b/pkg/compiler/lib/src/inferrer/simple_types_inferrer.dart
@@ -374,7 +374,7 @@ class SimpleTypeInferrerVisitor<T>
     // each update, and reading them yields the type that was found in a
     // previous analysis of [outermostElement].
     ClosureClassMap closureData =
-        compiler.closureToClassMapper.computeClosureToClassMapping(resolvedAst);
+        compiler.closureToClassMapper.getClosureToClassMapping(resolvedAst);
     closureData.forEachCapturedVariable((variable, field) {
       locals.setCaptured(variable, field);
     });
@@ -558,8 +558,8 @@ class SimpleTypeInferrerVisitor<T>
     // Record the types of captured non-boxed variables. Types of
     // these variables may already be there, because of an analysis of
     // a previous closure.
-    ClosureClassMap nestedClosureData =
-        compiler.closureToClassMapper.getMappingForNestedFunction(node);
+    ClosureClassMap nestedClosureData = compiler.closureToClassMapper
+        .getClosureToClassMapping(element.resolvedAst);
     nestedClosureData.forEachCapturedVariable((variable, field) {
       if (!nestedClosureData.isVariableBoxed(variable)) {
         if (variable == nestedClosureData.thisLocal) {