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

src/ast.cc

Index: src/ast.cc
diff --git a/src/ast.cc b/src/ast.cc
index 7369e75ea1558c7d5b5d2a692b97d2f263ecd5c7..595c1efd8b7066eed244a60a68440f8ac5c48df2 100644
--- a/src/ast.cc
+++ b/src/ast.cc
@@ -152,13 +152,13 @@ StrictMode FunctionLiteral::strict_mode() const {
 
 
 bool FunctionLiteral::uses_super_property() const {
-  DCHECK_NOT_NULL(scope());
+  DCHECK(scope());
   return scope()->uses_super_property() || scope()->inner_uses_super_property();
 }
 
 
 bool FunctionLiteral::uses_super_constructor_call() const {
-  DCHECK_NOT_NULL(scope());
+  DCHECK(scope());
   return scope()->uses_super_constructor_call() ||
          scope()->inner_uses_super_constructor_call();
 }