This CL adds two new extensions:

 * EGL_ANGLE_ggp_stream_descriptor:
    Introduces a new attribute to CreateWindowSurface. Allows the app
    to pass in a stream descriptor to VkCreateSurfaceKHR.
    Mirrors VK_GGP_stream_descriptor_surface.

 * EGL_ANGLE_swap_with_frame_token:
    Introduces a new function 'eglSwapBuffersWithFrameTokenANGLE'. This
    allows the app to pass a GGP frame token down to vkQueuePresentKHR.
    Mirrors VK_GGP_frame_token.

Bug: angleproject:4078
Change-Id: I4313ac4c264e68999905049f661bc64b44f72fab
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1897315
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Cody Northrop <cnorthrop@google.com>