Oilpan: Flush a HeapDoesNotContainCache before calling checkAndMarkPointer

Source/platform/heap/HeapTest.cpp

Index: Source/platform/heap/HeapTest.cpp
diff --git a/Source/platform/heap/HeapTest.cpp b/Source/platform/heap/HeapTest.cpp
index ef756c99bf03857e53f48749ee0dec035b99e735..4e4bdcfa57a99e895bb57f9a88e80110c949916a 100644
--- a/Source/platform/heap/HeapTest.cpp
+++ b/Source/platform/heap/HeapTest.cpp
@@ -3385,6 +3385,7 @@ TEST(HeapTest, CheckAndMarkPointer)
         TestGCScope scope(ThreadState::HeapPointersOnStack);
         EXPECT_TRUE(scope.allThreadsParked()); // Fail the test if we could not park all threads.
         Heap::prepareForGC();
+        Heap::flushHeapDoesNotContainCache();
         for (size_t i = 0; i < objectAddresses.size(); i++) {
             EXPECT_TRUE(Heap::checkAndMarkPointer(&visitor, objectAddresses[i]));
             EXPECT_TRUE(Heap::checkAndMarkPointer(&visitor, endAddresses[i]));
@@ -3403,7 +3404,8 @@ TEST(HeapTest, CheckAndMarkPointer)
     {
         TestGCScope scope(ThreadState::HeapPointersOnStack);
         EXPECT_TRUE(scope.allThreadsParked());
-        Heap::makeConsistentForSweeping();
+        Heap::prepareForGC();
+        Heap::flushHeapDoesNotContainCache();
         for (size_t i = 0; i < objectAddresses.size(); i++) {
             // We would like to assert that checkAndMarkPointer returned false
             // here because the pointers no longer point into a valid object