Need to keep VkIcdSurface private to the loader.
The definition may conflict with some redefinitions of
VK_DEFINE_NON_DISPATCHABLE_HANDLE and it's not necessary to make public
anyway.
Change-Id: I30e166f0ecce2fd3ea36c745dc073b705973d75f
Use the ICD to create and destroy VkSurfaceKHR objects instead
of just performing the work in the ICD. This only occurs if the ICD
exports the appropriate entry-points, and exposes version 3 of the
loader/icd interface.
Change-Id: I5e7bf9506318823c57ad75cf19d3f53fdfa6451e
Per Khronos Bugzilla Bug 15077, on Windows and Linux, VkSurfaceKHR is treated
as a pointer to platform-specific structs that contain the platform-specific
connection and surface/window info. The Vulkan loader vkCreate*SurfaceKHR()
functions will fill in the struct. ICDs and layers will cast VkSurfaceKHR to a
pointer to the appropriate VkIcdSurface* struct.
