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

src/parser.cc

Index: src/parser.cc
diff --git a/src/parser.cc b/src/parser.cc
index 93af5028b8c250f18a939025ccc1225026bbe128..33c7c42ec11b6c7327202eeee94cd0740b32fe73 100644
--- a/src/parser.cc
+++ b/src/parser.cc
@@ -3931,7 +3931,7 @@ ClassLiteral* Parser::ParseClassLiteral(const AstRawString* name,
 
     if (has_seen_constructor && constructor == NULL) {
       constructor = GetPropertyValue(property)->AsFunctionLiteral();
-      DCHECK_NOT_NULL(constructor);
+      DCHECK(constructor);
     } else {
       properties->Add(property, zone());
     }
@@ -3954,8 +3954,8 @@ ClassLiteral* Parser::ParseClassLiteral(const AstRawString* name,
   block_scope = block_scope->FinalizeBlockScope();
 
   if (name != NULL) {
-    DCHECK_NOT_NULL(proxy);
-    DCHECK_NOT_NULL(block_scope);
+    DCHECK(proxy);
+    DCHECK(block_scope);
     proxy->var()->set_initializer_position(end_pos);
   }