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

src/compiler/node-properties.h

Index: src/compiler/node-properties.h
diff --git a/src/compiler/node-properties.h b/src/compiler/node-properties.h
index b40faf39d407916c48501dc0d5d7dfe3ad92ed99..9b9926b75132bc8531116a7b40d24f4ef9a5422e 100644
--- a/src/compiler/node-properties.h
+++ b/src/compiler/node-properties.h
@@ -104,8 +104,8 @@ class NodeProperties FINAL {
     return node->bounds();
   }
   static void SetBounds(Node* node, Bounds bounds) {
-    DCHECK_NOT_NULL(bounds.lower);
-    DCHECK_NOT_NULL(bounds.upper);
+    DCHECK(bounds.lower);
+    DCHECK(bounds.upper);
     node->set_bounds(bounds);
   }
   static void RemoveBounds(Node* node) { node->set_bounds(Bounds()); }