Revert of Separate Scope into DeclarationScope and Scope

src/full-codegen/s390/full-codegen-s390.cc

Index: src/full-codegen/s390/full-codegen-s390.cc
diff --git a/src/full-codegen/s390/full-codegen-s390.cc b/src/full-codegen/s390/full-codegen-s390.cc
index 4bced1439da84a5a8de2fc3c93a80055f8264c67..efa5be67be32e33cd8297cd22151f39261f9d1e2 100644
--- a/src/full-codegen/s390/full-codegen-s390.cc
+++ b/src/full-codegen/s390/full-codegen-s390.cc
@@ -213,8 +213,7 @@
     int num_parameters = info->scope()->num_parameters();
     int first_parameter = info->scope()->has_this_declaration() ? -1 : 0;
     for (int i = first_parameter; i < num_parameters; i++) {
-      Variable* var =
-          (i == -1) ? info->scope()->receiver() : info->scope()->parameter(i);
+      Variable* var = (i == -1) ? scope()->receiver() : scope()->parameter(i);
       if (var->IsContextSlot()) {
         int parameter_offset = StandardFrameConstants::kCallerSPOffset +
                                (num_parameters - 1 - i) * kPointerSize;
@@ -246,7 +245,7 @@
 
   // Possibly set up a local binding to the this function which is used in
   // derived constructors with super calls.
-  Variable* this_function_var = info->scope()->this_function_var();
+  Variable* this_function_var = scope()->this_function_var();
   if (this_function_var != nullptr) {
     Comment cmnt(masm_, "[ This function");
     if (!function_in_register_r3) {
@@ -257,7 +256,7 @@
   }
 
   // Possibly set up a local binding to the new target value.
-  Variable* new_target_var = info->scope()->new_target_var();
+  Variable* new_target_var = scope()->new_target_var();
   if (new_target_var != nullptr) {
     Comment cmnt(masm_, "[ new.target");
     SetVar(new_target_var, r5, r2, r4);
@@ -265,7 +264,7 @@
 
   // Possibly allocate RestParameters
   int rest_index;
-  Variable* rest_param = info->scope()->rest_parameter(&rest_index);
+  Variable* rest_param = scope()->rest_parameter(&rest_index);
   if (rest_param) {
     Comment cmnt(masm_, "[ Allocate rest parameter array");
 
@@ -279,7 +278,7 @@
     SetVar(rest_param, r2, r3, r4);
   }
 
-  Variable* arguments = info->scope()->arguments();
+  Variable* arguments = scope()->arguments();
   if (arguments != NULL) {
     // Function uses arguments object.
     Comment cmnt(masm_, "[ Allocate arguments object");
@@ -3526,7 +3525,7 @@
 }
 
 void FullCodeGenerator::PushFunctionArgumentForContextAllocation() {
-  DeclarationScope* closure_scope = scope()->GetClosureScope();
+  Scope* closure_scope = scope()->ClosureScope();
   if (closure_scope->is_script_scope() || closure_scope->is_module_scope()) {
     // Contexts nested in the native context have a canonical empty function
     // as their closure, not the anonymous closure containing the global