Reland parts of 'Use weak cells in map checks in polymorphic ICs'

test/cctest/cctest.status

Index: test/cctest/cctest.status
diff --git a/test/cctest/cctest.status b/test/cctest/cctest.status
index c40ae957ca12608fda5c06ecd09ca0a43d4335a2..293485b34c1679165b9b437505277998af6f2db7 100644
--- a/test/cctest/cctest.status
+++ b/test/cctest/cctest.status
@@ -78,6 +78,14 @@
   'test-debug/RecursiveBreakpoints': [PASS, FLAKY],
   'test-debug/RecursiveBreakpointsGlobal': [PASS, FLAKY],
 
+  # BUG(3629). Known memory leak.
+  'test-heap/WeakMapInPolymorphicStoreIC': [SKIP],
+  # BUG(3663).
+  'test-heap/WeakMapInPolymorphicLoadIC': [SKIP],
+  'test-heap/WeakMapInPolymorphicKeyedLoadIC': [SKIP],
+  'test-heap/WeakMapInPolymorphicKeyedStoreIC': [SKIP],
+  'test-heap/IncrementalMarkingPreservesPolymorphicIC': [SKIP],
+
   ##############################################################################
   # TurboFan compiler failures.