[heap] MemoryChunk cleanup

src/ppc/macro-assembler-ppc.cc

Index: src/ppc/macro-assembler-ppc.cc
diff --git a/src/ppc/macro-assembler-ppc.cc b/src/ppc/macro-assembler-ppc.cc
index 4e39d967afdb7e67c256e6775af71ad5e067f6e6..7408cf3903fd154917129c7e97876a87d61f6c77 100644
--- a/src/ppc/macro-assembler-ppc.cc
+++ b/src/ppc/macro-assembler-ppc.cc
@@ -282,9 +282,7 @@ void MacroAssembler::StoreRoot(Register source, Heap::RootListIndex index,
 void MacroAssembler::InNewSpace(Register object, Register scratch,
                                 Condition cond, Label* branch) {
   DCHECK(cond == eq || cond == ne);
-  const int mask =
-      (1 << MemoryChunk::IN_FROM_SPACE) | (1 << MemoryChunk::IN_TO_SPACE);
-  CheckPageFlag(object, scratch, mask, cond, branch);
+  CheckPageFlag(object, scratch, MemoryChunk::kIsInNewSpaceMask, cond, branch);
 }