[heap] Exclude the owner of the linear allocation area from evacuation.

test/cctest/test-unboxed-doubles.cc

Index: test/cctest/test-unboxed-doubles.cc
diff --git a/test/cctest/test-unboxed-doubles.cc b/test/cctest/test-unboxed-doubles.cc
index dde26d26761aa96dccf52a7be72f78690abb1528..abaa058f852498a9e08d49821b1b4d69b22dc563 100644
--- a/test/cctest/test-unboxed-doubles.cc
+++ b/test/cctest/test-unboxed-doubles.cc
@@ -1141,7 +1141,7 @@ TEST(DoScavengeWithIncrementalWriteBarrier) {
   // simulate incremental marking.
   FLAG_stress_compaction = true;
   FLAG_manual_evacuation_candidates_selection = true;
-  ec_page->SetFlag(MemoryChunk::FORCE_EVACUATION_CANDIDATE_FOR_TESTING);
+  heap::ForceEvacuationCandidate(ec_page);
   heap::SimulateIncrementalMarking(heap);
   // Disable stress compaction mode in order to let GC do scavenge.
   FLAG_stress_compaction = false;
@@ -1459,7 +1459,7 @@ static void TestIncrementalWriteBarrier(Handle<Map> map, Handle<Map> new_map,
 
   // Heap is ready, force |ec_page| to become an evacuation candidate and
   // simulate incremental marking.
-  ec_page->SetFlag(MemoryChunk::FORCE_EVACUATION_CANDIDATE_FOR_TESTING);
+  heap::ForceEvacuationCandidate(ec_page);
   heap::SimulateIncrementalMarking(heap);
 
   // Check that everything is ready for triggering incremental write barrier