These extensions give power apps the ability to query raw device
pointers from the EGL layer. EGL_EXT_device_query is based on
EGL_EXT_device_base, which is being split into device_query and
device_enumerate. We remove the device enumeration logic, and only
allow the app to query the current device from a display, which
matches how ANGLE works internally.

EGL_ANGLE_device_d3d gives the app the ability to query D3D
devices associated with a display.

BUG=angleproject:935

Change-Id: I8079661f00d11717ed0e792c9fe8dc5c26f67dcc
Reviewed-on: https://chromium-review.googlesource.com/252110Reviewed-by: Jamie Madill <jmadill@chromium.org>
Tested-by: Jamie Madill <jmadill@chromium.org>