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

src/full-codegen.cc

Index: src/full-codegen.cc
diff --git a/src/full-codegen.cc b/src/full-codegen.cc
index cc32c3e31fa50b5fd8e3601d69869dcc4187a56e..78984c4a58bfd2caeb6d62770f656b863f6889fa 100644
--- a/src/full-codegen.cc
+++ b/src/full-codegen.cc
@@ -1616,7 +1616,7 @@ void FullCodeGenerator::VisitClassLiteral(ClassLiteral* lit) {
     EmitClassDefineProperties(lit);
 
     if (lit->scope() != NULL) {
-      DCHECK_NOT_NULL(lit->class_variable_proxy());
+      DCHECK(lit->class_variable_proxy());
       EmitVariableAssignment(lit->class_variable_proxy()->var(),
                              Token::INIT_CONST);
     }