Joe Onorato e70b375c4b Add an opacity attribute to LayerDrawable that lets you control the opacity directly instead of
collecting the values from the children-- a task that is much harder to get right than we want to
spend startup time on.

Change-Id: Idf5b1d612472c6accfdc935c6a6fadb1eb239a73
2010-11-17 21:20:08 -08:00
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