[test] Skip failing tests

Bug: v8:6328
TBR=yangguo@chromium.org,bmeurer@chromium.org
NOTRY=true

Change-Id: Id0b01292635598fa8578dc2e6aa28ef104bcd878
Reviewed-on: https://chromium-review.googlesource.com/489987Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44968}

test/cctest/cctest.status

@@ -243,6 +243,17 @@
   'test-serialize/PartialSerializerContext': [PASS, ['arch == x64 and mode == debug', SKIP]],
 }],  # 'system == windows'
 
+##############################################################################
+['system == windows and arch == x64 and mode == debug', {
+  # BUG(v8:6328).
+  'test-serialize/PartialSerializerCustomContext': [SKIP],
+  'test-serialize/PartialSerializerObject': [SKIP],
+  'test-serialize/StartupSerializerOnce': [SKIP],
+  'test-serialize/StartupSerializerOnceRunScript': [SKIP],
+  'test-serialize/StartupSerializerTwiceRunScript': [SKIP],
+  'test-serialize/StartupSerializerTwice': [SKIP],
+}],  # 'system == windows and arch == x64 and mode == debug'
+
 ##############################################################################
 ['system == macos', {
   # BUG(v8:5193) Flaky failures.