tree 93ecea78325d084ad6c8a6e40416bc42b8858afb
parent cb496acbe593326e8d5d563847067d02b2df40ec
author Chia-I Wu <olv@google.com> 1496181248 -0700
committer Chia-I Wu <olv@google.com> 1496331455 -0700

surfaceflinger: fix layer count

When a layer is removed, mLayerCount is always decremented by 1 even
though the layer has children.  This commit fixes that by making
sure mLayerCount is properly decremented, and makes sure that a
parent layer must be a valid layer in mCurrentState.

Bug: 37121786
Test: manually open and close Camera app
Change-Id: I5a3e18be41646b167b4d361dfe08db4d06e1c2d0