Oilpan: fix HeapVectorShrinkInlineCapacity test with ASan enabled.
Oilpan: fix HeapVectorShrinkInlineCapacity test with ASan enabled.

If 'contiguous container' overflow checking is enabled, vector inline
buffers aren't supported. Adjust test accordingly.

R=
BUG=420515

Review URL: https://codereview.chromium.org/1092223002

git-svn-id: bf5cd6ccde378db821296732a091cfbcf5285fbd@194375 bbb929c8-8fbe-4397-9dbb-9b2b20218538

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