Disable HeapDeathTest.SameThreadCheck* tests on mac

third_party/WebKit/Source/platform/heap/HeapTest.cpp

Index: third_party/WebKit/Source/platform/heap/HeapTest.cpp
diff --git a/third_party/WebKit/Source/platform/heap/HeapTest.cpp b/third_party/WebKit/Source/platform/heap/HeapTest.cpp
index 5916802ec5c1e3dfab0b0a7cb9302b8bdd2fcdfe..0448e3b7b4bf482d2a6ef4fad9e8fb7a3f516bf5 100644
--- a/third_party/WebKit/Source/platform/heap/HeapTest.cpp
+++ b/third_party/WebKit/Source/platform/heap/HeapTest.cpp
@@ -5540,10 +5540,14 @@ class MemberSameThreadCheckTester {
 };
 
 #if DCHECK_IS_ON()
+// TODO(keishi) This test is flaky on mac_chromium_rel_ng bot.
+// crbug.com/709069
+#if !OS(MACOSX)
 TEST(HeapDeathTest, MemberSameThreadCheck) {
   EXPECT_DEATH(MemberSameThreadCheckTester().Test(), "");
 }
 #endif
+#endif
 
 class PersistentSameThreadCheckTester {
  public:
@@ -5579,10 +5583,14 @@ class PersistentSameThreadCheckTester {
 };
 
 #if DCHECK_IS_ON()
+// TODO(keishi) This test is flaky on mac_chromium_rel_ng bot.
+// crbug.com/709069
+#if !OS(MACOSX)
 TEST(HeapDeathTest, PersistentSameThreadCheck) {
   EXPECT_DEATH(PersistentSameThreadCheckTester().Test(), "");
 }
 #endif
+#endif
 
 class MarkingSameThreadCheckTester {
  public:
@@ -5629,12 +5637,16 @@ class MarkingSameThreadCheckTester {
 };
 
 #if DCHECK_IS_ON()
+// TODO(keishi) This test is flaky on mac_chromium_rel_ng bot.
+// crbug.com/709069
+#if !OS(MACOSX)
 TEST(HeapDeathTest, MarkingSameThreadCheck) {
   // This will crash during marking, at the DCHECK in Visitor::markHeader() or
   // earlier.
   EXPECT_DEATH(MarkingSameThreadCheckTester().Test(), "");
 }
 #endif
+#endif
 
 static bool AllocateAndReturnBool() {
   ConservativelyCollectGarbage();