DO NOT MERGE Remove window obscurement information. am: c3c2ed94ff am: 96fe6421f6 am: 9d99b0001e  -s ours am: 3280efe50e  -s ours am: b737365553 am: 3d1931d4e3  -s ours
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Change-Id: I72398c99878637d26dbb976bab05aca315368729