Don't treat function parameters as let-bound variables in Harmony mode.

R=ulan@chromium.org
BUG=v8:1942
TEST=

Review URL: https://chromiumcodereview.appspot.com/9365054

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10698 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/parser.cc

@@ -4048,7 +4048,7 @@ FunctionLiteral* Parser::ParseFunctionLiteral(Handle<String> function_name,
         reserved_loc = scanner().location();
       }
 
-      top_scope_->DeclareParameter(param_name, is_extended_mode() ? LET : VAR);
+      top_scope_->DeclareParameter(param_name, VAR);
       num_parameters++;
       if (num_parameters > kMaxNumFunctionParameters) {
         ReportMessageAt(scanner().location(), "too_many_parameters",

test/mjsunit/harmony/block-conflicts.js

@@ -130,5 +130,5 @@ for (var v = 0; v < varbinds.length; ++v) {
 
 // Test conflicting parameter/var bindings.
 for (var v = 0; v < varbinds.length; ++v) {
-  TestConflict('(function (x) { ' + varbinds[v] + '; })()');
+  TestNoConflict('(function (x) { ' + varbinds[v] + '; })()');
 }