Add "Submitted from process" to GpuTrack's tooltips
Add "Submitted from process" to GpuTrack's tooltips

Since we now have the information from `GpuJob`s.
This can be relevant when GPU activity is caused by a process different than the
target.

Bug: http://b/185202201

Test: Capture Trata and see that the tooltips show the new information.
Also do the same with the Vulkan layer and verify the tooltips of command
buffers and debug markers.

google/orbit,google/orbit,google/orbit,google/orbit