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

src/compiler/instruction-selector-impl.h

Index: src/compiler/instruction-selector-impl.h
diff --git a/src/compiler/instruction-selector-impl.h b/src/compiler/instruction-selector-impl.h
index 26ac2d9f590f30e3a1ca2302eef3bbae8fd4f880..626fbf6baae12c5af983125a9a0101720fc627ea 100644
--- a/src/compiler/instruction-selector-impl.h
+++ b/src/compiler/instruction-selector-impl.h
@@ -169,16 +169,16 @@ class OperandGenerator {
   }
 
   UnallocatedOperand* Define(Node* node, UnallocatedOperand* operand) {
-    DCHECK_NOT_NULL(node);
-    DCHECK_NOT_NULL(operand);
+    DCHECK(node);
+    DCHECK(operand);
     operand->set_virtual_register(selector_->GetVirtualRegister(node));
     selector()->MarkAsDefined(node);
     return operand;
   }
 
   UnallocatedOperand* Use(Node* node, UnallocatedOperand* operand) {
-    DCHECK_NOT_NULL(node);
-    DCHECK_NOT_NULL(operand);
+    DCHECK(node);
+    DCHECK(operand);
     operand->set_virtual_register(selector_->GetVirtualRegister(node));
     selector()->MarkAsUsed(node);
     return operand;
@@ -232,14 +232,14 @@ class FlagsContinuation FINAL {
         condition_(condition),
         true_block_(true_block),
         false_block_(false_block) {
-    DCHECK_NOT_NULL(true_block);
-    DCHECK_NOT_NULL(false_block);
+    DCHECK(true_block);
+    DCHECK(false_block);
   }
 
   // Creates a new flags continuation from the given condition and result node.
   FlagsContinuation(FlagsCondition condition, Node* result)
       : mode_(kFlags_set), condition_(condition), result_(result) {
-    DCHECK_NOT_NULL(result);
+    DCHECK(result);
   }
 
   bool IsNone() const { return mode_ == kFlags_none; }