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

src/ia32/full-codegen-ia32.cc

Index: src/ia32/full-codegen-ia32.cc
diff --git a/src/ia32/full-codegen-ia32.cc b/src/ia32/full-codegen-ia32.cc
index 985cffc2b7d8bc110692a50190f7262954c57f95..0ea1ed0051e229dc96dff454ac0218d5e6eef9ee 100644
--- a/src/ia32/full-codegen-ia32.cc
+++ b/src/ia32/full-codegen-ia32.cc
@@ -3714,7 +3714,7 @@ void FullCodeGenerator::EmitValueOf(CallRuntime* expr) {
 void FullCodeGenerator::EmitDateField(CallRuntime* expr) {
   ZoneList<Expression*>* args = expr->arguments();
   DCHECK(args->length() == 2);
-  DCHECK_NE(NULL, args->at(1)->AsLiteral());
+  DCHECK(args->at(1)->AsLiteral());
   Smi* index = Smi::cast(*(args->at(1)->AsLiteral()->value()));
 
   VisitForAccumulatorValue(args->at(0));  // Load the object.
@@ -4070,7 +4070,7 @@ void FullCodeGenerator::EmitGetFromCache(CallRuntime* expr) {
   ZoneList<Expression*>* args = expr->arguments();
   DCHECK_EQ(2, args->length());
 
-  DCHECK_NE(NULL, args->at(0)->AsLiteral());
+  DCHECK(args->at(0)->AsLiteral());
   int cache_id = Smi::cast(*(args->at(0)->AsLiteral()->value()))->value();
 
   Handle<FixedArray> jsfunction_result_caches(