Promotion of android-external.lnx.2.0-00021.

CRs      Change ID                                   Subject
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2012918   I3ee45c9d9a2d74a391729f43f92ecba353e65f3d   DO NOT MERGE Do not create an SkRawCodec with zero dimen

Change-Id: I4d97dac195310cedb7d8b1ed7354b799240e608e
CRs-Fixed: 2012918