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

src/compiler/node.h

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_COMPILER_NODE_H_
 #define V8_COMPILER_NODE_H_
 
 #include "src/compiler/opcodes.h"
 #include "src/compiler/operator.h"
 #include "src/types-inl.h"
@@ skipping 264 matching lines @@
 
   bool operator==(const Edge& other) { return input_ == other.input_; }
   bool operator!=(const Edge& other) { return !(*this == other); }
 
   void UpdateTo(Node* new_to) { input_->Update(new_to); }
 
  private:
   friend class Node::UseEdges::iterator;
   friend class Node::InputEdges::iterator;
 
-  explicit Edge(Node::Input* input) : input_(input) { DCHECK_NOT_NULL(input); }
+  explicit Edge(Node::Input* input) : input_(input) { DCHECK(input); }
 
   Node::Input* input_;
 };
 
 
 // A forward iterator to visit the edges for the input dependencies of a node.
 class Node::InputEdges::iterator FINAL {
  public:
   typedef std::forward_iterator_tag iterator_category;
   typedef int difference_type;
@@ skipping 98 matching lines @@
 
   Edge operator*() const {
     return Edge(current_->from->GetInputRecordPtr(current_->input_index));
   }
 
   bool operator==(const iterator& other) const {
     return current_ == other.current_;
   }
   bool operator!=(const iterator& other) const { return !(*this == other); }
   iterator& operator++() {
-    DCHECK_NOT_NULL(current_);
+    DCHECK(current_);
     current_ = next_;
     next_ = current_ ? current_->next : nullptr;
     return *this;
   }
   iterator operator++(int);
 
  private:
   friend class Node::UseEdges;
 
   iterator() : current_(nullptr), next_(nullptr) {}
@@ skipping 29 matching lines @@
   const_iterator(const const_iterator& other) : current_(other.current_) {}
 
   Node* operator*() const { return current_->from; }
   bool operator==(const const_iterator& other) const {
     return other.current_ == current_;
   }
   bool operator!=(const const_iterator& other) const {
     return other.current_ != current_;
   }
   const_iterator& operator++() {
-    DCHECK_NOT_NULL(current_);
+    DCHECK(current_);
     current_ = current_->next;
     return *this;
   }
   const_iterator operator++(int);
 
  private:
   friend class Node::Uses;
 
   const_iterator() : current_(nullptr) {}
   explicit const_iterator(Node* node) : current_(node->first_use_) {}
@@ skipping 12 matching lines @@
 
 void Node::ReplaceInput(int index, Node* new_to) {
   GetInputRecordPtr(index)->Update(new_to);
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_NODE_H_