Revert "Refactor how we read global-type-inference data from ssa"

tests/compiler/dart2js/concrete_type_inference_test.dart

Index: tests/compiler/dart2js/concrete_type_inference_test.dart
diff --git a/tests/compiler/dart2js/concrete_type_inference_test.dart b/tests/compiler/dart2js/concrete_type_inference_test.dart
index 6a142cd98baa3d0ec1496a3b7bb29c7e30c251f3..de673f837735c351b4145890976fd022556a566a 100644
--- a/tests/compiler/dart2js/concrete_type_inference_test.dart
+++ b/tests/compiler/dart2js/concrete_type_inference_test.dart
@@ -25,7 +25,7 @@ void checkPrintType(String expression, checkType(compiler, type)) {
         var parameter =
           printElement.functionSignature.requiredParameters.first;
         var type =
-            compiler.globalInference.results.typeOf(parameter);
+            compiler.globalInference.getGuaranteedTypeOfElement(parameter);
         checkType(compiler, type);
       }));
 
@@ -36,7 +36,7 @@ void checkPrintType(String expression, checkType(compiler, type)) {
         var parameter =
           printElement.functionSignature.requiredParameters.first;
         var type =
-            compiler.globalInference.results.typeOf(parameter);
+            compiler.globalInference.getGuaranteedTypeOfElement(parameter);
         checkType(compiler, type);
       }));
 
@@ -47,7 +47,7 @@ void checkPrintType(String expression, checkType(compiler, type)) {
         var parameter =
           printElement.functionSignature.requiredParameters.first;
         var type =
-            compiler.globalInference.results.typeOf(parameter);
+            compiler.globalInference.getGuaranteedTypeOfElement(parameter);
         checkType(compiler, type);
       }));
 }
@@ -91,13 +91,13 @@ void testOptionalParameters() {
         var inference = compiler.globalInference;
         Expect.identical(
             commonMasks.uint31Type,
-            inference.results.typeOf(firstParameter));
+            inference.getGuaranteedTypeOfElement(firstParameter));
         Expect.identical(
             commonMasks.nullType,
-            inference.results.typeOf(secondParameter));
+            inference.getGuaranteedTypeOfElement(secondParameter));
         Expect.identical(
             commonMasks.nullType,
-            inference.results.typeOf(thirdParameter));
+            inference.getGuaranteedTypeOfElement(thirdParameter));
       });
 }