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

src/compiler/node.cc

Index: src/compiler/node.cc
diff --git a/src/compiler/node.cc b/src/compiler/node.cc
index a4680e4636f1630219fcfc4041e3aef1f260edbf..de4aafcda82e453758490b7063a997158e106ddb 100644
--- a/src/compiler/node.cc
+++ b/src/compiler/node.cc
@@ -39,15 +39,15 @@ Node* Node::New(Zone* zone, NodeId id, const Operator* op, int input_count,
 
 
 void Node::Kill() {
-  DCHECK_NOT_NULL(op());
+  DCHECK(op());
   RemoveAllInputs();
   DCHECK(uses().empty());
 }
 
 
 void Node::AppendInput(Zone* zone, Node* new_to) {
-  DCHECK_NOT_NULL(zone);
-  DCHECK_NOT_NULL(new_to);
+  DCHECK(zone);
+  DCHECK(new_to);
   Use* new_use = new (zone) Use;
   Input new_input;
   new_input.to = new_to;
@@ -68,7 +68,7 @@ void Node::AppendInput(Zone* zone, Node* new_to) {
 
 
 void Node::InsertInput(Zone* zone, int index, Node* new_to) {
-  DCHECK_NOT_NULL(zone);
+  DCHECK(zone);
   DCHECK_LE(0, index);
   DCHECK_LT(index, InputCount());
   AppendInput(zone, InputAt(InputCount() - 1));
@@ -134,11 +134,11 @@ void Node::ReplaceUses(Node* replace_to) {
     use->from->GetInputRecordPtr(use->input_index)->to = replace_to;
   }
   if (!replace_to->last_use_) {
-    DCHECK_EQ(nullptr, replace_to->first_use_);
+    DCHECK(!replace_to->first_use_);
     replace_to->first_use_ = first_use_;
     replace_to->last_use_ = last_use_;
   } else if (first_use_) {
-    DCHECK_NOT_NULL(replace_to->first_use_);
+    DCHECK(replace_to->first_use_);
     replace_to->last_use_->next = first_use_;
     first_use_->prev = replace_to->last_use_;
     replace_to->last_use_ = last_use_;