Avoid exposing compiler-allocated temporaries to the debugger

test/mjsunit/harmony/debug-blockscopes.js

Index: test/mjsunit/harmony/debug-blockscopes.js
diff --git a/test/mjsunit/harmony/debug-blockscopes.js b/test/mjsunit/harmony/debug-blockscopes.js
index ca2ab9e5a68d90d362e6eb37b02a1cfc7493bb3c..f56a306b6faace323ac8249132adbf1a6e386d4d 100644
--- a/test/mjsunit/harmony/debug-blockscopes.js
+++ b/test/mjsunit/harmony/debug-blockscopes.js
@@ -147,18 +147,10 @@ function CheckScopeContent(content, number, exec_state) {
   if (!scope.scopeObject().property('arguments').isUndefined()) {
     scope_size--;
   }
-  // Also ignore synthetic variable from catch block.
-  if (!scope.scopeObject().property('.catch-var').isUndefined()) {
-    scope_size--;
-  }
   // Skip property with empty name.
   if (!scope.scopeObject().property('').isUndefined()) {
     scope_size--;
   }
-  // Also ignore synthetic variable from block scopes.
-  if (!scope.scopeObject().property('.block').isUndefined()) {
-    scope_size--;
-  }
 
   if (count != scope_size) {
     print('Names found in scope:');
@@ -375,8 +367,9 @@ listener_delegate = function(exec_state) {
                    debug.ScopeType.Local,
                    debug.ScopeType.Global], exec_state);
   CheckScopeContent({x:'y'}, 0, exec_state);
-  // The function scope contains a temporary iteration variable.
-  CheckScopeContent({'.for.x':'y'}, 1, exec_state);
+  // The function scope contains a temporary iteration variable, but it is
+  // hidden to the debugger.
+  CheckScopeContent({}, 1, exec_state);
 };
 for_loop_1();
 EndTest();
@@ -400,8 +393,9 @@ listener_delegate = function(exec_state) {
                    debug.ScopeType.Global], exec_state);
   CheckScopeContent({x:3}, 0, exec_state);
   CheckScopeContent({x:'y'}, 1, exec_state);
-  // The function scope contains a temporary iteration variable.
-  CheckScopeContent({'.for.x':'y'}, 2, exec_state);
+  // The function scope contains a temporary iteration variable, hidden to the
+  // debugger.
+  CheckScopeContent({}, 2, exec_state);
 };
 for_loop_2();
 EndTest();