Add header checking for direct dependent configs

This checks for the case where A -> B -> C and A uses C's headers but C has direct_dependent_configs that don't ally to A.

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Review URL: https://codereview.chromium.org/278263002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@270169 0039d316-1c4b-4281-b951-d872f2087c98
5 files changed