Removed some comments which did not make any sense

src/variables.h

 // Copyright 2006-2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 144 matching lines @@
   // Type testing & conversion
   Property* AsProperty();
   Variable* AsVariable();
   bool IsValidLeftHandSide() { return is_valid_LHS_; }
 
   // The source code for an eval() call may refer to a variable that is
   // in an outer scope about which we don't know anything (it may not
   // be the global scope). scope() is NULL in that case. Currently the
   // scope is only used to follow the context chain length.
   Scope* scope() const  { return scope_; }
-  // If this assertion fails it means that some code has tried to
-  // treat the special this variable as an ordinary variable with
-  // the name "this".
+
   Handle<String> name() const  { return name_; }
   Mode mode() const  { return mode_; }
   bool is_accessed_from_inner_scope() const  {
     return is_accessed_from_inner_scope_;
   }
   UseCount* var_uses()  { return &var_uses_; }
   UseCount* obj_uses()  { return &obj_uses_; }
 
   bool IsVariable(Handle<String> n) {
     return !is_this() && name().is_identical_to(n);
@@ skipping 44 matching lines @@
   // rewrite_ is usually a Slot or a Property, but may be any expression.
   Expression* rewrite_;
 
   friend class Scope;  // Has explicit access to rewrite_.
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_VARIABLES_H_