Do not concatenate start/stop markers to the action string with a '_',
delimit them with a space instead. This will make easier to parse the
message afterwards.
Seem I cherry-picked the geekbench workload from my WIP branch
without testing properly, and missed a fixup commit. Here's the
content of that commit, which fixes some missing updates from WA2 ->
WA3 APIs.
Differences from original:
- Standard renaming and rearrangement of imports
- UiAutomation.java now uses the setup() and runWorkload() phases which weren't
present before.