Switch to version 2 of ComposeDevice

Note backward compatibility is maintained on emu host side while previous
version 1 will be handled correctly. This CL makes it ready for
upcoming CLs that support physical display emulation.

The key is to pass the displayId to host side to support multi-display.

Test: manually
Change-Id: Ia8e9b8953ff949e67c5f6214cde2635b2e5b82e1
5 files changed