ui: Show more detailed status during loading
ui: Show more detailed status during loading

RelNotes: ui: Give more status information during loading
Change-Id: I5d3ab9dfb32d038a6acfcf1249fc7619ca460821
google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto