Use .callMethod instead of LocalFunctionElement as key in inference

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

Index: pkg/compiler/lib/src/inferrer/type_graph_inferrer.dart
diff --git a/pkg/compiler/lib/src/inferrer/type_graph_inferrer.dart b/pkg/compiler/lib/src/inferrer/type_graph_inferrer.dart
index 6f541ebef565b4b30df523312c981aa1a5f3a404..58a31a491b7667e60d11bed3580cc093ef10c064 100644
--- a/pkg/compiler/lib/src/inferrer/type_graph_inferrer.dart
+++ b/pkg/compiler/lib/src/inferrer/type_graph_inferrer.dart
@@ -69,12 +69,6 @@ class TypeGraphInferrer implements TypesInferrer {
     inferrer.runOverAllElements();
   }
 
-  @deprecated
-  TypeMask getReturnTypeOfLocalFunction(LocalFunctionElement element) {
-    if (compiler.disableTypeInference) return _dynamicType;
-    return inferrer.types.getInferredTypeOfLocalFunction(element).type;
-  }
-
   TypeMask getReturnTypeOfMember(MemberElement element) {
     if (compiler.disableTypeInference) return _dynamicType;
     // Currently, closure calls return dynamic.
@@ -87,12 +81,6 @@ class TypeGraphInferrer implements TypesInferrer {
     return _dynamicType;
   }
 
-  @deprecated
-  TypeMask getTypeOfLocalFunction(LocalFunctionElement element) {
-    if (compiler.disableTypeInference) return _dynamicType;
-    return commonMasks.functionType;
-  }
-
   TypeMask getTypeOfMember(MemberElement element) {
     if (compiler.disableTypeInference) return _dynamicType;
     // The inferrer stores the return type for a function, so we have to
@@ -156,14 +144,6 @@ class TypeGraphInferrer implements TypesInferrer {
     return inferrer.getCallersOf(element);
   }
 
-  @deprecated
-  bool isLocalFunctionCalledOnce(LocalFunctionElement element) {
-    if (compiler.disableTypeInference) return false;
-    MemberTypeInformation info =
-        inferrer.types.getInferredTypeOfLocalFunction(element);
-    return info.isCalledOnce();
-  }
-
   bool isMemberCalledOnce(MemberElement element) {
     if (compiler.disableTypeInference) return false;
     MemberTypeInformation info =