Use big-boy Types to annotate interface descriptor parameters

src/code-stubs-hydrogen.cc

Index: src/code-stubs-hydrogen.cc
diff --git a/src/code-stubs-hydrogen.cc b/src/code-stubs-hydrogen.cc
index 4573da151279d68dab655dbf0cbd587a40c7c892..2749b810e4cb9dfc5bc52b221a4accc5080507d2 100644
--- a/src/code-stubs-hydrogen.cc
+++ b/src/code-stubs-hydrogen.cc
@@ -136,7 +136,8 @@ bool CodeStubGraphBuilderBase::BuildGraph() {
   bool runtime_stack_params = descriptor_.stack_parameter_count().is_valid();
   HInstruction* stack_parameter_count = NULL;
   for (int i = 0; i < param_count; ++i) {
-    Representation r = descriptor_.GetEnvironmentParameterRepresentation(i);
+    Representation r =
+        RepresentationFromType(descriptor_.GetEnvironmentParameterType(i));
     HParameter* param = Add<HParameter>(i,
                                         HParameter::REGISTER_PARAMETER, r);
     start_environment->Bind(i, param);