Parser / PreParser: trivial unifications

src/preparser.h

Index: src/preparser.h
diff --git a/src/preparser.h b/src/preparser.h
index 4b526f5f1f3c6f039ae730c70b07eccfa8a20444..e86251b8ef16978acdd3ce7fb8ebe8af881d73b9 100644
--- a/src/preparser.h
+++ b/src/preparser.h
@@ -172,6 +172,15 @@ class ParserBase : public Traits {
     PARSE_EAGERLY
   };
 
+  enum VariableDeclarationContext {
+    kStatementListItem,
+    kStatement,
+    kForStatement
+  };
+
+  // If a list of variable declarations includes any initializers.
+  enum VariableDeclarationProperties { kHasInitializers, kHasNoInitializers };
+
   class Checkpoint;
   class ObjectLiteralCheckerBase;
 
@@ -1195,7 +1204,6 @@ class PreParserTraits {
     typedef void GeneratorVariable;
 
     typedef int AstProperties;
-    typedef Vector<PreParserIdentifier> ParameterIdentifierVector;
 
     // Return types for traversing functions.
     typedef PreParserIdentifier Identifier;
@@ -1557,18 +1565,6 @@ class PreParser : public ParserBase<PreParserTraits> {
   // are either being counted in the preparser data, or is important
   // to throw the correct syntax error exceptions.
 
-  enum VariableDeclarationContext {
-    kSourceElement,
-    kStatement,
-    kForStatement
-  };
-
-  // If a list of variable declarations includes any initializers.
-  enum VariableDeclarationProperties {
-    kHasInitializers,
-    kHasNoInitializers
-  };
-
   // All ParseXXX functions take as the last argument an *ok parameter
   // which is set to false if parsing failed; it is unchanged otherwise.
   // By making the 'exception handling' explicit, we are forced to check