Limit entry points into the parser API.

src/parser.h

Index: src/parser.h
diff --git a/src/parser.h b/src/parser.h
index 783626ad190f28bd030caeab3d635a72d7df7202..efb7706086d20d3c59ecd8ac6303ea6dc70b0a37 100644
--- a/src/parser.h
+++ b/src/parser.h
@@ -461,9 +461,6 @@ class Parser BASE_EMBEDDED {
   static bool Parse(CompilationInfo* info) { return Parser(info).Parse(); }
   bool Parse();
 
-  // Returns NULL if parsing failed.
-  FunctionLiteral* ParseProgram();
-
   void ReportMessageAt(Scanner::Location loc,
                        const char* message,
                        Vector<const char*> args);
@@ -568,6 +565,9 @@ class Parser BASE_EMBEDDED {
     Mode old_mode_;
   };
 
+  // Returns NULL if parsing failed.
+  FunctionLiteral* ParseProgram();
+
   FunctionLiteral* ParseLazy();
   FunctionLiteral* ParseLazy(Utf16CharacterStream* source);