[ast][parsing] Variable declaration cleanups.

src/parsing/parser.h

Index: src/parsing/parser.h
diff --git a/src/parsing/parser.h b/src/parsing/parser.h
index 9d63145ef1b38b700328aab98d09e67c8b5275b0..e93232db7731edd434c139032aa497bf2c965cd6 100644
--- a/src/parsing/parser.h
+++ b/src/parsing/parser.h
@@ -1079,13 +1079,16 @@ class Parser : public ParserBase<ParserTraits> {
                                             Scope* complex_params_scope,
                                             bool* ok);
 
-  // Parser support
+  InitializationFlag DefaultInitializationFlag(VariableMode mode);
   VariableProxy* NewUnresolved(const AstRawString* name, VariableMode mode);
   Variable* Declare(Declaration* declaration,
-                    DeclarationDescriptor::Kind declaration_kind, bool resolve,
-                    bool* ok, Scope* declaration_scope = nullptr);
-  void DeclareConstVariable(const AstRawString* name, InitializationFlag init,
-                            int pos, bool* ok);
+                    DeclarationDescriptor::Kind declaration_kind,
+                    InitializationFlag init, bool resolve, bool* ok,
+                    Scope* declaration_scope = nullptr);
+  Declaration* DeclareVariable(const AstRawString* name, VariableMode mode,
+                               int pos, bool* ok);
+  Declaration* DeclareVariable(const AstRawString* name, VariableMode mode,
+                               InitializationFlag init, int pos, bool* ok);
 
   bool TargetStackContainsLabel(const AstRawString* label);
   BreakableStatement* LookupBreakTarget(const AstRawString* label, bool* ok);