Set relayoutChildren to 'true' only if size change happens in Table
Set relayoutChildren to 'true' only if size change happens in Table

This patch passes 'true' value for layoutPositionedObjects() in case of size change.
It helps to avoid unneccessary setChildNeedsLayout() and setPreferredLogicalWidthsDirty() calls.

Review URL: https://codereview.chromium.org/714933002

git-svn-id: bf5cd6ccde378db821296732a091cfbcf5285fbd@185144 bbb929c8-8fbe-4397-9dbb-9b2b20218538

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