Cleanup the AST code by removing unused parts and get rid of the...

src/full-codegen.cc

Index: src/full-codegen.cc
===================================================================
--- src/full-codegen.cc	(revision 5322)
+++ src/full-codegen.cc	(working copy)
@@ -431,6 +431,11 @@
 }
 
 
+void FullCodeGenSyntaxChecker::VisitCompareToNull(CompareToNull* expr) {
+  Visit(expr->expression());
+}
+
+
 void FullCodeGenSyntaxChecker::VisitThisFunction(ThisFunction* expr) {
   // Supported.
 }
@@ -654,6 +659,11 @@
 }
 
 
+void BreakableStatementChecker::VisitCompareToNull(CompareToNull* expr) {
+  Visit(expr->expression());
+}
+
+
 void BreakableStatementChecker::VisitCompareOperation(CompareOperation* expr) {
   Visit(expr->left());
   Visit(expr->right());