Hidl will crash if hidl call failed and return value was not checked.
Check hidl call return values.
Bug: 132182836
Change-Id: I910025a7b3c508b3c8f289a5286abbcc77e2d9b8
Fix bufferpool carsh sporadically on invalidation. use android::sp
instead of android::wp for caching IObserver hidl interface.
Bug: 112203066
Change-Id: I69aafa11cc617f9ae36cce88283a3294fcab9bbd
Implementation is currently identical to 1.0 impl.
The update will be applied afterwards.
Bug: 112203066
Change-Id: If19af34121f5c9736ab4e8ccf7b1716d0be05c81