X87: Initial switch to Chromium-style CHECK_* and DCHECK_* macros

port 0deaa4b6 (r26340)

     (code change in full-codegen-x87.cc is covered by r26340 ).

original commit message:

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

BUG=

Review URL: https://codereview.chromium.org/903353002

Cr-Commit-Position: refs/heads/master@{#26504}

src/x87/code-stubs-x87.cc

@@ -1381,7 +1381,7 @@ void CompareICStub::GenerateGeneric(MacroAssembler* masm) {
     // If either is a Smi (we know that not both are), then they can only
     // be equal if the other is a HeapNumber. If so, use the slow case.
     STATIC_ASSERT(kSmiTag == 0);
-    DCHECK_EQ(0, Smi::FromInt(0));
+    DCHECK_EQ(static_cast<Smi*>(0), Smi::FromInt(0));
     __ mov(ecx, Immediate(kSmiTagMask));
     __ and_(ecx, eax);
     __ test(ecx, edx);

src/x87/lithium-codegen-x87.cc

@@ -4815,7 +4815,7 @@ void LCodeGen::DoTransitionElementsKind(LTransitionElementsKind* instr) {
     __ mov(FieldOperand(object_reg, HeapObject::kMapOffset),
            Immediate(to_map));
     // Write barrier.
-    DCHECK_NE(instr->temp(), NULL);
+    DCHECK_NOT_NULL(instr->temp());
     __ RecordWriteForMap(object_reg, to_map, new_map_reg,
                          ToRegister(instr->temp()), kDontSaveFPRegs);
   } else {