Merge frameworks/base changes from master-skia to master.

Adaptations to changes in Skia upstream since Oct 2014.
(https://code.google.com/p/skia/issues/detail?id=2377)

cbb922d use new roundOut signature
77082de Call SkColorTable::readColors().
5456ab1 Handle the result of SkMatrix::asAffine.
25cfc78 Remove dependence on SK_LEGACY_PICTURE_SIZE_API.

BUG:18468293

Change-Id: I5a4d274e854298843891410b1ffd5e24f038b88a