Initial switch to Chromium-style CHECK_* and DCHECK_* macros.

src/ast.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_AST_H_
 #define V8_AST_H_
 
 #include "src/v8.h"
 
 #include "src/assembler.h"
@@ skipping 1633 matching lines @@
   const AstRawString* raw_name() const {
     return is_resolved() ? var_->raw_name() : raw_name_;
   }
 
   Variable* var() const {
     DCHECK(is_resolved());
     return var_;
   }
   void set_var(Variable* v) {
     DCHECK(!is_resolved());
-    DCHECK_NOT_NULL(v);
+    DCHECK(v);
     var_ = v;
   }
 
   bool is_this() const { return IsThisField::decode(bit_field_); }
 
   bool is_assigned() const { return IsAssignedField::decode(bit_field_); }
   void set_is_assigned() {
     bit_field_ = IsAssignedField::update(bit_field_, true);
   }
 
@@ skipping 1883 matching lines @@
 
  private:
   Zone* zone_;
   AstValueFactory* ast_value_factory_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_AST_H_