First part of inspecting local variables

runtime/vm/parser.cc

Index: runtime/vm/parser.cc
===================================================================
--- runtime/vm/parser.cc	(revision 2646)
+++ runtime/vm/parser.cc	(working copy)
@@ -3436,6 +3436,10 @@
 
 SequenceNode* Parser::CloseBlock() {
   SequenceNode* statements = current_block_->statements;
+  if (current_block_->scope != NULL) {
+    // Record the end token index of the scope.
+    current_block_->scope->set_end_token_index(token_index_);
+  }
   current_block_ = current_block_->parent;
   return statements;
 }