Merge changes I6e89439a,I9d9aafe6,I38340654,Ie50a9d37,Icd98abf5, ... into nyc-dev

am: 63fd9006

* commit '63fd9006':
  vulkan: deprecate device layers
  vulkan: detect errors in VkEnumerate*ExtensionProperties
  vulkan: do not distinguish instance or device LayerRef
  vulkan: make Get*LayerRef take a Layer
  vulkan: refactor layer extension enumeration
  vulkan: refactor layer enumeration

Change-Id: I1ecc01b5c4b116d8f4248bfd20a96775142278b6